Lots of changes, again.

Lots of changes, notably the following:

* skr/*.skr:  Moved engines to `src/guile/skribilo/engine'.

* src/guile/skribilo/engine.scm (lookup-engine):  Rewritten.  Don't use
  the auto-load alist.

* src/guile/skribilo/evaluator.scm:  New name of the `eval' module.
  `eval' couldn't be used as the module base-name because of Guile's
  recursive module name space.

git-archimport-id: lcourtes@laas.fr--2005-mobile/skribilo--devel--1.2--patch-2

22 files changed, 6685 insertions, 260 deletions

diff --git a/src/guile/README b/src/guile/README
new file mode 100644
index 0000000..1b9a6c4
--- /dev/null
+++ b/src/guile/README
@@ -0,0 +1,42 @@
+Skribilo
+========
+
+Skribilo is a port of Skribe to GNU Guile.
+
+Here are a few goals.
+
+* Usability
+
+** Integration with Guile's module system
+
+** Better error handling, automatic back-traces, etc.
+
+* Font-ends (readers)
+
+** Implement a new front-end mechanism (see `(skribilo reader)')
+
+** Skribe front-end (read Skribe syntax)
+
+** Texinfo front-end
+
+** Simple markup front-end (à la `txt2tags', Emacs' outline mode, or Wiki)
+
+* Back-ends (engines)
+
+** Easier to plug-in new back-ends (no need to modify the source)
+
+** Better HTML (or XHTML?) back-end
+
+** Lout back-end (including automatic `lout' invocation?)
+
+** Info back-end
+
+* Packages
+
+** Pie charts
+
+** Equations
+
+
+
+;;; arch-tag: 2d0a6235-5c09-4930-998c-56a4de2c0aca
diff --git a/src/guile/skribilo.scm b/src/guile/skribilo.scm
index c352f7f..ae21fab 100755
--- a/src/guile/skribilo.scm
+++ b/src/guile/skribilo.scm
@@ -1,7 +1,7 @@
 #!/bin/sh
 # aside from this initial boilerplate, this is actually -*- scheme -*- code
 main='(module-ref (resolve-module '\''(skribilo)) '\'main')'
-exec ${GUILE-guile} -l $0 -c "(apply $main (cdr (command-line)))" "$@"
+exec ${GUILE-guile} --debug -l $0 -c "(apply $main (cdr (command-line)))" "$@"
 !#
 
 ;;;;
@@ -42,17 +42,11 @@ exec ${GUILE-guile} -l $0 -c "(apply $main (cdr (command-line)))" "$@"
 ;; Allow for this `:style' of keywords.
 (read-set! keywords 'prefix)
 
-;; Allow for DSSSL-style keywords (i.e. `#!key', etc.).
-;; See http://lists.gnu.org/archive/html/guile-devel/2005-06/msg00060.html
-;; for details.
-(read-hash-extend #\! (lambda (chr port)
-			(symbol->keyword (read port))))
-
 (let ((gensym-orig gensym))
   ;; In Skribe, `gensym' expects a symbol as its (optional) argument, while
   ;; Guile's `gensym' expect a string.  XXX
   (set! gensym
-	(lambda (. args)
+	(lambda args
 	  (if (null? args)
 	      (gensym-orig)
 	      (let ((the-arg (car args)))
@@ -64,45 +58,29 @@ exec ${GUILE-guile} -l $0 -c "(apply $main (cdr (command-line)))" "$@"
 		       (skribe-error 'gensym "Invalid argument type"
 				     the-arg))))))))
 
-; (use-modules (skribe eval)
-;	     (skribe configure)
-;	     (skribe runtime)
-;	     (skribe engine)
-;	     (skribe writer)
-;	     (skribe verify)
-;	     (skribe output)
-;	     (skribe biblio)
-;	     (skribe prog)
-;	     (skribe resolve)
-;	     (skribe source)
-;	     (skribe lisp)
-;	     (skribe xml)
-;	     (skribe c)
-;	     (skribe debug)
-;	     (skribe color))
-
-(use-modules (skribe runtime)
-	     (skribe configure)
-	     (skribe eval)
-	     (skribe engine)
-	     (skribe types) ;; because `new' is a macro and refers to classes
-
-	     (oop goops)  ;; because `new' is a macro
-	     (ice-9 optargs)
 
-	     (ice-9 getopt-long))
+(set! %load-hook
+      (lambda (file)
+	(format #t "~~ loading `~a'...~%" file)))
 
+
+(define-module (skribilo))
 
-(load "skribe/lib.scm")
+(use-modules (skribilo module)
+	     (skribilo runtime)
+	     (skribilo evaluator)
+	     (skribilo types)
+	     (skribilo engine)
+	     (skribilo debug)
+	     (skribilo vars)
+	     (skribilo lib)
 
-(load "../common/configure.scm")
-(load "../common/param.scm")
-(load "../common/lib.scm")
-(load "../common/sui.scm")
-(load "../common/index.scm")
+	     (ice-9 optargs)
+	     (ice-9 getopt-long))
 
-;; Markup definitions...
-(load "../common/api.scm")
+
+
+;;; FIXME:  With my `#:reader' thing added to `define-module',
 
 
 
@@ -115,7 +93,7 @@ specifications."
     ,@(if alternate
 	  `((single-char ,(string-ref alternate 0)))
 	  '())
-    (value #f)))
+    (value ,(if arg #t #f))))
 
 (define (raw-options->getopt-long options)
   "Converts @var{options} to a getopt-long-compatible representation."
@@ -130,9 +108,9 @@ specifications."
   (("target" :alternate "t" :arg target
     :help "sets the output format to <target>")
    (set! engine (string->symbol target)))
-  (("I" :arg path :help "adds <path> to Skribe path")
+  (("load-path" :alternate "I" :arg path :help "adds <path> to Skribe path")
    (set! paths (cons path paths)))
-  (("B" :arg path :help "adds <path> to bibliography path")
+  (("bib-path" :alternate "B" :arg path :help "adds <path> to bibliography path")
    (skribe-bib-path-set! (cons path (skribe-bib-path))))
   (("S" :arg path :help "adds <path> to source path")
    (skribe-source-path-set! (cons path (skribe-source-path))))
@@ -247,7 +225,7 @@ Processes a Skribilo/Skribe source file and produces its output.
 "))
 
 (define (skribilo-show-version)
-  (format #t "skribilo ~a~%" (skribe-release)))
+  (format #t "skribilo ~a~%" (skribilo-release)))
 
 ;;;; ======================================================================
 ;;;;
@@ -387,16 +365,20 @@ Processes a Skribilo/Skribe source file and produces its output.
 ;;;;				      S K R I B E
 ;;;;
 ;;;; ======================================================================
+; (define (doskribe)
+;    (let ((e (find-engine *skribe-engine*)))
+;      (if (and (engine? e) (pair? *skribe-precustom*))
+; 	 (for-each (lambda (cv)
+; 		     (engine-custom-set! e (car cv) (cdr cv)))
+; 		   *skribe-precustom*))
+;      (if (pair? *skribe-src*)
+; 	 (for-each (lambda (f) (skribe-load f :engine *skribe-engine*))
+; 		   *skribe-src*)
+; 	 (skribe-eval-port (current-input-port) *skribe-engine*))))
+
 (define (doskribe)
-   (let ((e (find-engine *skribe-engine*)))
-     (if (and (engine? e) (pair? *skribe-precustom*))
-	 (for-each (lambda (cv)
-		     (engine-custom-set! e (car cv) (cdr cv)))
-		   *skribe-precustom*))
-     (if (pair? *skribe-src*)
-	 (for-each (lambda (f) (skribe-load f :engine *skribe-engine*))
-		   *skribe-src*)
-	 (skribe-eval-port (current-input-port) *skribe-engine*))))
+  (set-current-module (make-run-time-module))
+  (skribe-eval-port (current-input-port) *skribe-engine*))
 
 
 ;;;; ======================================================================
@@ -404,42 +386,81 @@ Processes a Skribilo/Skribe source file and produces its output.
 ;;;;				      M A I N
 ;;;;
 ;;;; ======================================================================
-(define (skribilo . args)
-  (let* ((options           (getopt-long (cons "skribilo" args) skribilo-options))
-	 (target            (option-ref options 'target #f))
+(define-public (skribilo . args)
+  (let* ((options           (getopt-long (cons "skribilo" args)
+					 skribilo-options))
+	 (engine            (string->symbol
+			     (option-ref options 'target "html")))
+	 (debugging-level   (option-ref options 'debug 0))
+	 (load-path         (option-ref options 'load-path "."))
+	 (bib-path          (option-ref options 'bib-path "."))
+	 (preload           '())
+	 (variants          '())
+
 	 (help-wanted       (option-ref options 'help #f))
 	 (version-wanted    (option-ref options 'version #f)))
 
+    ;; Set up the debugging infrastructure.
+    (debug-enable 'debug)
+    (debug-enable 'backtrace)
+    (debug-enable 'procnames)
+    (read-enable  'positions)
+
     (cond (help-wanted    (begin (skribilo-show-help) (exit 1)))
-	  (version-wanted (begin (skribilo-show-version) (exit 1)))
-	  (target         (format #t "target set to `~a'~%" target)))
+	  (version-wanted (begin (skribilo-show-version) (exit 1))))
+
+    ;; Parse the most important options.
+
+    (set! *skribe-engine* engine)
+
+    (set-skribe-debug! (string->number debugging-level))
+
+    (set! %skribilo-load-path
+	  (cons load-path %skribilo-load-path))
+    (set! %skribilo-bib-path
+	  (cons bib-path %skribilo-bib-path))
+
+    (if (option-ref options 'verbose #f)
+	(set! *skribe-verbose* #t))
 
     ;; Load the user rc file
-    (load-rc)
+    ;(load-rc)
+
+    ;; load the basic Skribe modules
+    (load-skribe-modules)
 
     ;; Load the base file to bootstrap the system as well as the files
-    ;; that are in the *skribe-preload* variable
-    (skribe-load "base.skr" :engine 'base)
+    ;; that are in the PRELOAD variable.
+    (find-engine 'base)
     (for-each (lambda (f)
 		(skribe-load f :engine *skribe-engine*))
-	      *skribe-preload*)
+	      preload)
 
-    ;; Load the specified variants
+    ;; Load the specified variants.
     (for-each (lambda (x)
 		(skribe-load (format #f "~a.skr" x) :engine *skribe-engine*))
-	      (reverse! *skribe-variants*))
-
-    ;;  (if (string? *skribe-dest*)
-    ;;      (with-handler (lambda (kind loc msg)
-    ;;		      (remove-file *skribe-dest*)
-    ;;		      (error loc msg))
-    ;;	 (with-output-to-file *skribe-dest* doskribe))
-    ;;      (doskribe))
-    (if (string? *skribe-dest*)
-	(with-output-to-file *skribe-dest* doskribe)
-	(doskribe))))
-
-(display "skribilo loaded\n")
+	      (reverse! variants))
+
+    (let ((files (option-ref options '() '())))
+      (if (null? files)
+	  (error "you must specify at least the input file" files))
+      (if (> (length files) 2)
+	  (error "you can specify at most one input file and one output file"
+		 files))
+
+      (let* ((source-file (car files))
+	     (dest-file (if (null? (cdr files)) #f (cadr files)))
+	     (source-port (open-input-file source-file)))
+
+	(if (and dest-file (file-exists? dest-file))
+	    (delete-file dest-file))
+
+	(with-input-from-file source-file
+	  (lambda ()
+	    (if (string? dest-file)
+		(with-output-to-file dest-file doskribe)
+		(doskribe))))))))
+
 
 (define main skribilo)
 
diff --git a/src/guile/skribilo/biblio.scm b/src/guile/skribilo/biblio.scm
index 0a4fc98..d4a644e 100644
--- a/src/guile/skribilo/biblio.scm
+++ b/src/guile/skribilo/biblio.scm
@@ -143,7 +143,7 @@
 ;;; ======================================================================
 ;; FIXME: Factoriser
 (define (skribe-open-bib-file file command)
- (let ((path (find-path file *skribe-bib-path*)))
+ (let ((path (search-path *skribe-bib-path* file)))
    (if (string? path)
        (begin
 	 (when (> *skribe-verbose* 0)
diff --git a/src/guile/skribilo/config.scm.in b/src/guile/skribilo/config.scm.in
index 6e40e7f..a5e3b7c 100644
--- a/src/guile/skribilo/config.scm.in
+++ b/src/guile/skribilo/config.scm.in
@@ -10,7 +10,6 @@
 (define-public (skribilo-default-path)        "@SKRIBILO_SKR_PATH@")
 (define-public (skribilo-scheme)              "guile")
 
-
 ;; Compatibility.
 
 (define-public skribe-release      skribilo-release)
diff --git a/src/guile/skribilo/debug.scm b/src/guile/skribilo/debug.scm
index 1a5478e..b880a66 100644
--- a/src/guile/skribilo/debug.scm
+++ b/src/guile/skribilo/debug.scm
@@ -73,8 +73,7 @@
 (define (debug-color col . o)
   (with-output-to-string
     (if (and *skribe-debug-color*
-	     (equal? (getenv "TERM") "xterm")
-	     (interactive-port? *debug-port*))
+	     (equal? (getenv "TERM") "xterm"))
 	(lambda ()
 	  (format #t "[1;~Am" (+ 31 col))
 	  (for-each display o)
diff --git a/src/guile/skribilo/engine.scm b/src/guile/skribilo/engine.scm
index 9584f5e..1b39ec6 100644
--- a/src/guile/skribilo/engine.scm
+++ b/src/guile/skribilo/engine.scm
@@ -27,9 +27,10 @@
 
 (define-module (skribilo engine)
   :use-module (skribilo debug)
-;  :use-module (skribilo eval)
+;  :use-module (skribilo evaluator)
   :use-module (skribilo writer)
   :use-module (skribilo types)
+  :use-module (skribilo lib)
 
   :use-module (oop goops)
   :use-module (ice-9 optargs)
@@ -58,11 +59,14 @@
 
 
 (define (default-engine-set! e)
-  (if (not (engine? e))
-      (skribe-error 'default-engine-set! "bad engine ~S" e))
-  (set! *default-engine* e)
-  (set! *default-engines* (cons e *default-engines*))
-  e)
+  (with-debug 5 'default-engine-set!
+     (debug-item "engine=" e)
+
+     (if (not (engine? e))
+	 (skribe-error 'default-engine-set! "bad engine ~S" e))
+     (set! *default-engine* e)
+     (set! *default-engines* (cons e *default-engines*))
+     e))
 
 
 (define (push-default-engine e)
@@ -141,32 +145,22 @@
 ;;;
 ;;;	FIND-ENGINE
 ;;;
-(define (%find-loaded-engine id version)
-  (let loop ((es *engines*))
-    (cond
-      ((null? es) #f)
-      ((eq? (slot-ref (car es) 'ident) id)
-       (cond
-	   ((eq? version 'unspecified)		       (car es))
-	   ((eq? version (slot-ref (car es) 'version)) (car es))
-	   (else				       (Loop (cdr es)))))
-      (else (loop (cdr es))))))
-
 
-(define* (find-engine id #:key (version 'unspecified))
-  (with-debug 5 'find-engine
+(define* (lookup-engine id #:key (version 'unspecified))
+  "Look for an engine named @var{name} (a symbol) in the @code{(skribilo
+engine)} module hierarchy.  If no such engine was found, an error is raised,
+otherwise the requested engine is returned."
+  (with-debug 5 'lookup-engine
      (debug-item "id=" id " version=" version)
 
-     (or (%find-loaded-engine id version)
-	 (let ((c (assq id *skribe-auto-load-alist*)))
-	   (debug-item "c=" c)
-	   (if (and c (string? (cdr c)))
-	       (begin
-		 (skribe-load (cdr c) :engine 'base)
-		 (%find-loaded-engine id version))
-	       #f)))))
+     (let* ((engine (symbol-append id '-engine))
+	    (m (resolve-module `(skribilo engine ,id))))
+       (if (module-bound? m engine)
+	   (module-ref m engine)
+	   (error "no such engine" id)))))
 
-(define lookup-engine find-engine)
+(define (find-engine . args)
+  (false-if-exception (apply lookup-engine args)))
 
 
 ;;;
diff --git a/src/guile/skribilo/engine/base.scm b/src/guile/skribilo/engine/base.scm
new file mode 100644
index 0000000..53d837d
--- /dev/null
+++ b/src/guile/skribilo/engine/base.scm
@@ -0,0 +1,466 @@
+;*=====================================================================*/
+;*    serrano/prgm/project/skribe/skr/base.skr                         */
+;*    -------------------------------------------------------------    */
+;*    Author      :  Manuel Serrano                                    */
+;*    Creation    :  Sat Jul 26 12:39:30 2003                          */
+;*    Last change :  Wed Oct 27 11:24:20 2004 (eg)                     */
+;*    Copyright   :  2003-04 Manuel Serrano                            */
+;*    -------------------------------------------------------------    */
+;*    BASE Skribe engine                                               */
+;*=====================================================================*/
+
+(define-skribe-module (skribilo engine base))
+
+;*---------------------------------------------------------------------*/
+;*    base-engine ...                                                  */
+;*---------------------------------------------------------------------*/
+(define base-engine
+   (default-engine-set!
+      (make-engine 'base
+		   :version 'plain
+		   :symbol-table '(("iexcl" "!")
+				   ("cent" "c")
+				   ("lguillemet" "\"")
+				   ("not" "!")
+				   ("registered" "(r)")
+				   ("degree" "o")
+				   ("plusminus" "+/-")
+				   ("micro" "o")
+				   ("paragraph" "p")
+				   ("middot" ".")
+				   ("rguillemet" "\"")
+				   ("iquestion" "?")
+				   ("Agrave" "À")
+				   ("Aacute" "A")
+				   ("Acircumflex" "Â")
+				   ("Atilde" "A")
+				   ("Amul" "A")
+				   ("Aring" "A")
+				   ("AEligature" "AE")
+				   ("Oeligature" "OE")
+				   ("Ccedilla" "Ç")
+				   ("Egrave" "È")
+				   ("Eacute" "É")
+				   ("Ecircumflex" "Ê")
+				   ("Euml" "E")
+				   ("Igrave" "I")
+				   ("Iacute" "I")
+				   ("Icircumflex" "Î")
+				   ("Iuml" "I")
+				   ("ETH" "D")
+				   ("Ntilde" "N")
+				   ("Ograve" "O")
+				   ("Oacute" "O")
+				   ("Ocurcumflex" "O")
+				   ("Otilde" "O")
+				   ("Ouml" "O")
+				   ("times" "x")
+				   ("Oslash" "O")
+				   ("Ugrave" "Ù")
+				   ("Uacute" "U")
+				   ("Ucircumflex" "Û")
+				   ("Uuml" "Ü")
+				   ("Yacute" "Y")
+				   ("agrave" "à")
+				   ("aacute" "a")
+				   ("acircumflex" "â")
+				   ("atilde" "a")
+				   ("amul" "a")
+				   ("aring" "a")
+				   ("aeligature" "æ")
+				   ("oeligature" "oe")
+				   ("ccedilla" "ç")
+				   ("egrave" "è")
+				   ("eacute" "é")
+				   ("ecircumflex" "ê")
+				   ("euml" "e")
+				   ("igrave" "i")
+				   ("iacute" "i")
+				   ("icircumflex" "î")
+				   ("iuml" "i")
+				   ("ntilde" "n")
+				   ("ograve" "o")
+				   ("oacute" "o")
+				   ("ocurcumflex" "o")
+				   ("otilde" "o")
+				   ("ouml" "o")
+				   ("divide" "/")
+				   ("oslash" "o")
+				   ("ugrave" "ù")
+				   ("uacute" "u")
+				   ("ucircumflex" "û")
+				   ("uuml" "ü")
+				   ("yacute" "y")
+				   ("ymul" "y")
+				   ;; punctuation
+				   ("bullet" ".")
+				   ("ellipsis" "...")
+				   ("<-" "<-")
+				   ("<--" "<--")
+				   ("uparrow" "^;")
+				   ("->" "->")
+				   ("-->" "-->")
+				   ("downarrow" "v")
+				   ("<->" "<->")
+				   ("<-->" "<-->")
+				   ("<+" "<+")
+				   ("<=" "<=;")
+				   ("<==" "<==")
+				   ("Uparrow" "^")
+				   ("=>" "=>")
+				   ("==>" "==>")
+				   ("Downarrow" "v")
+				   ("<=>" "<=>")
+				   ("<==>" "<==>")
+				   ;; Mathematical operators
+				   ("asterisk" "*")
+				   ("angle" "<")
+				   ("and" "^;")
+				   ("or" "v")
+				   ("models" "|=")
+				   ("vdash" "|-")
+				   ("dashv" "-|")
+				   ("sim" "~")
+				   ("mid" "|")
+				   ("langle" "<")
+				   ("rangle" ">")
+				   ;; LaTeX
+				   ("circ" "o")
+				   ("top" "T")
+				   ("lhd" "<")
+				   ("rhd" ">")
+				   ("parallel" "||")))))
+
+;*---------------------------------------------------------------------*/
+;*    mark ...                                                         */
+;*---------------------------------------------------------------------*/
+(markup-writer 'symbol
+   :action (lambda (n e)
+	      (let* ((s (markup-body n))
+		     (c (assoc s (engine-symbol-table e))))
+		 (if (pair? c)
+		     (display (cadr c))
+		     (output s e)))))
+
+;*---------------------------------------------------------------------*/
+;*    unref ...                                                        */
+;*---------------------------------------------------------------------*/
+(markup-writer 'unref
+   :options 'all
+   :action (lambda (n e)
+	      (let* ((s (markup-option n :skribe))
+		     (k (markup-option n 'kind))
+		     (f (cond
+			   (s
+			    (format "?~a@~a " k s))
+			   (else
+			    (format "?~a " k))))
+		     (msg (list f (markup-body n)))
+		     (n (list "[" (color :fg "red" (bold msg)) "]")))
+		 (skribe-eval n e))))
+
+;*---------------------------------------------------------------------*/
+;*    &the-bibliography ...                                            */
+;*---------------------------------------------------------------------*/
+(markup-writer '&the-bibliography
+   :before (lambda (n e)
+	      (let ((w (markup-writer-get 'table e)))
+		 (and (writer? w) (invoke (writer-before w) n e))))
+   :action (lambda (n e)
+	      (when (pair? (markup-body n))
+		 (for-each (lambda (i) (output i e)) (markup-body n))))
+   :after (lambda (n e)
+	     (let ((w (markup-writer-get 'table e)))
+		(and (writer? w) (invoke (writer-after w) n e)))))
+
+;*---------------------------------------------------------------------*/
+;*    &bib-entry ...                                                   */
+;*---------------------------------------------------------------------*/
+(markup-writer '&bib-entry
+   :options '(:title)
+   :before (lambda (n e)
+	      (invoke (writer-before (markup-writer-get 'tr e)) n e))
+   :action (lambda (n e)
+	      (let ((wtc (markup-writer-get 'tc e)))
+		 ;; the label
+		 (markup-option-add! n :valign 'top)
+		 (markup-option-add! n :align 'right)
+		 (invoke (writer-before wtc) n e)
+		 (output n e (markup-writer-get '&bib-entry-label e))
+		 (invoke (writer-after wtc) n e)
+		 ;; the body
+		 (markup-option-add! n :valign 'top)
+		 (markup-option-add! n :align 'left)
+		 (invoke (writer-before wtc) n e)
+		 (output n e (markup-writer-get '&bib-entry-body))
+		 (invoke (writer-after wtc) n e)))
+   :after (lambda (n e)
+	     (invoke (writer-after (markup-writer-get 'tr e)) n e)))
+
+;*---------------------------------------------------------------------*/
+;*    &bib-entry-label ...                                             */
+;*---------------------------------------------------------------------*/
+(markup-writer '&bib-entry-label
+   :options '(:title)
+   :before "["
+   :action (lambda (n e) (output (markup-option n :title) e))
+   :after "]")
+
+;*---------------------------------------------------------------------*/
+;*    &bib-entry-body ...                                              */
+;*---------------------------------------------------------------------*/
+(markup-writer '&bib-entry-body
+   :action (lambda (n e)
+	      (define (output-fields descr)
+		 (let loop ((descr descr)
+			    (pending #f)
+			    (armed #f))
+		    (cond
+		       ((null? descr)
+			'done)
+		       ((pair? (car descr))
+			(if (eq? (caar descr) 'or)
+			    (let ((o1 (cadr (car descr))))
+			       (if (markup-option n o1)
+				   (loop (cons o1 (cdr descr))
+					 pending
+					 #t)
+				   (let ((o2 (caddr (car descr))))
+				      (loop (cons o2 (cdr descr))
+					    pending
+					    armed))))
+			    (let ((o (markup-option n (cadr (car descr)))))
+			       (if o
+				   (begin
+				      (if (and pending armed)
+					  (output pending e))
+				      (output (caar descr) e)
+				      (output o e)
+				      (if (pair? (cddr (car descr)))
+					  (output (caddr (car descr)) e))
+				      (loop (cdr descr) #f #t))
+				   (loop (cdr descr) pending armed)))))
+		       ((symbol? (car descr))
+			(let ((o (markup-option n (car descr))))
+			   (if o
+			       (begin
+				  (if (and armed pending)
+				      (output pending e))
+				  (output o e)
+				  (loop (cdr descr) #f #t))
+			       (loop (cdr descr) pending armed))))
+		       ((null? (cdr descr))
+			(output (car descr) e))
+		       ((string? (car descr))
+			(loop (cdr descr)
+			      (if pending pending (car descr))
+			      armed))
+		       (else
+			(skribe-error 'output-bib-fields
+				      "Illegal description"
+				      (car descr))))))
+	      (output-fields
+	       (case (markup-option n 'kind)
+		  ((techreport)
+		   `(author " -- " (or title url documenturl) " -- "
+			    number ", " institution ", "
+			    address ", " month ", " year ", "
+			    ("pp. " pages) "."))
+		  ((article)
+		   `(author " -- " (or title url documenturl) " -- "
+			    journal ", " volume "" ("(" number ")") ", "
+			    address ", " month ", " year ", "
+			    ("pp. " pages) "."))
+		  ((inproceedings)
+		   `(author " -- " (or title url documenturl) " -- "
+			    booktitle ", " series ", " ("(" number ")") ", "
+			    address ", " month ", " year ", "
+			    ("pp. " pages) "."))
+		  ((book)
+		   '(author " -- " (or title url documenturl) " -- "
+			    publisher ", " address
+			    ", " month ", " year ", " ("pp. " pages) "."))
+		  ((phdthesis)
+		   '(author " -- " (or title url documenturl) " -- " type ", "
+			    school ", " address
+			    ", " month ", " year"."))
+		  ((misc)
+		   '(author " -- " (or title url documenturl) " -- "
+			    publisher ", " address
+			    ", " month ", " year"."))
+		  (else
+		   '(author " -- " (or title url documenturl) " -- "
+			    publisher ", " address
+			    ", " month ", " year ", " ("pp. " pages) "."))))))
+
+;*---------------------------------------------------------------------*/
+;*    &bib-entry-ident ...                                             */
+;*---------------------------------------------------------------------*/
+(markup-writer '&bib-entry-ident
+   :action (lambda (n e)
+	      (output (markup-option n 'number) e)))
+
+;*---------------------------------------------------------------------*/
+;*    &bib-entry-title ...                                             */
+;*---------------------------------------------------------------------*/
+(markup-writer '&bib-entry-title
+   :action (lambda (n e)
+	      (skribe-eval (bold (markup-body n)) e)))
+
+;*---------------------------------------------------------------------*/
+;*    &bib-entry-publisher ...                                         */
+;*---------------------------------------------------------------------*/
+(markup-writer '&bib-entry-publisher
+   :action (lambda (n e)
+	      (skribe-eval (it (markup-body n)) e)))
+
+;*---------------------------------------------------------------------*/
+;*    &the-index ...  @label the-index@                                */
+;*---------------------------------------------------------------------*/
+(markup-writer '&the-index
+   :options '(:column)
+   :before (lambda (n e)
+	      (output (markup-option n 'header) e))
+   :action (lambda (n e)
+	      (define (make-mark-entry n fst)
+		 (let ((l (tr :class 'index-mark-entry
+			     (td :colspan 2 :align 'left
+				(bold (it (sf n)))))))
+		    (if fst
+			(list l)
+			(list (tr (td :colspan 2)) l))))
+	      (define (make-primary-entry n p)
+		 (let* ((note (markup-option n :note))
+			(b (markup-body n))
+			(c (if note
+			       (list b
+				     (it (list " (" note ")")))
+			       b)))
+		    (when p
+		       (markup-option-add! b :text
+					   (list (markup-option b :text)
+						 ", p."))
+		       (markup-option-add! b :page #t))
+		    (tr :class 'index-primary-entry
+		       (td :colspan 2 :valign 'top :align 'left c))))
+	      (define (make-secondary-entry n p)
+		 (let* ((note (markup-option n :note))
+			(b (markup-body n))
+			(bb (markup-body b)))
+		    (cond
+		       ((not (or bb (is-markup? b 'url-ref)))
+			(skribe-error 'the-index
+				      "Illegal entry"
+				      b))
+		       (note
+			(let ((r (if bb
+				     (it (ref :class "the-index-secondary"
+					    :handle bb
+					    :page p
+					    :text (if p
+						      (list note ", p.")
+						      note)))
+				     (it (ref :class "the-index-secondary"
+					    :url (markup-option b :url)
+					    :page p
+					    :text (if p
+						      (list note ", p.")
+						      note))))))
+			   (tr :class 'index-secondary-entry
+			      (td :valign 'top :align 'right :width 1. " ...")
+			      (td :valign 'top :align 'left r))))
+		       (else
+			(let ((r (if bb
+				     (ref :class "the-index-secondary"
+					:handle bb
+					:page p
+					:text (if p " ..., p." " ..."))
+				     (ref :class "the-index-secondary"
+					:url (markup-option b :url)
+					:page p
+					:text (if p " ..., p." " ...")))))
+			   (tr :class 'index-secondary-entry
+			      (td :valign 'top :align 'right :width 1.)
+			      (td :valign 'top :align 'left r)))))))
+	      (define (make-column ie p)
+		 (let loop ((ie ie)
+			    (f #t))
+		    (cond
+		       ((null? ie)
+			'())
+		       ((not (pair? (car ie)))
+			(append (make-mark-entry (car ie) f)
+				(loop (cdr ie) #f)))
+		       (else
+			(cons (make-primary-entry (caar ie) p)
+			      (append (map (lambda (x)
+					      (make-secondary-entry x p))
+					   (cdar ie))
+				      (loop (cdr ie) #f)))))))
+	      (define (make-sub-tables ie nc p)
+		 (let* ((l (length ie))
+			(w (/ 100. nc))
+			(iepc (let ((d (/ l nc)))
+				 (if (integer? d)
+				     (inexact->exact d)
+				     (+ 1 (inexact->exact (truncate d))))))
+			(split (list-split ie iepc)))
+		    (tr (map (lambda (ies)
+				(td :valign 'top :width w
+				   (if (pair? ies)
+				       (table :width 100. (make-column ies p))
+				       "")))
+			     split))))
+	      (let* ((ie (markup-body n))
+		     (nc (markup-option n :column))
+		     (loc (ast-loc n))
+		     (pref (eq? (engine-custom e 'index-page-ref) #t))
+		     (t (cond
+			   ((null? ie)
+			    "")
+			   ((or (not (integer? nc)) (= nc 1))
+			    (table :width 100.
+			       :&skribe-eval-location loc
+			       :class "index-table"
+			       (make-column ie pref)))
+			   (else
+			    (table :width 100.
+			       :&skribe-eval-location loc
+			       :class "index-table"
+			       (make-sub-tables ie nc pref))))))
+		 (output (skribe-eval t e) e))))
+
+;*---------------------------------------------------------------------*/
+;*    &the-index-header ...                                            */
+;*    -------------------------------------------------------------    */
+;*    The index header is only useful for targets that support         */
+;*    hyperlinks such as HTML.                                         */
+;*---------------------------------------------------------------------*/
+(markup-writer '&the-index-header
+   :action (lambda (n e) #f))
+
+;*---------------------------------------------------------------------*/
+;*    &prog-line ...                                                   */
+;*---------------------------------------------------------------------*/
+(markup-writer '&prog-line
+   :before (lambda (n e)
+	      (let ((n (markup-ident n)))
+		 (if n (skribe-eval (it (list n) ": ") e))))
+   :after "\n")
+
+;*---------------------------------------------------------------------*/
+;*    line-ref ...                                                     */
+;*---------------------------------------------------------------------*/
+(markup-writer 'line-ref
+   :options '(:offset)
+   :action (lambda (n e)
+	      (let ((o (markup-option n :offset))
+		    (n (markup-ident (handle-body (markup-body n)))))
+		 (skribe-eval (it (if (integer? o) (+ o n) n)) e))))
+
+
+
+;;;; A VIRER (mais handle-body n'est pas défini)
+(markup-writer 'line-ref
+   :options '(:offset)
+   :action #f)
diff --git a/src/guile/skribilo/engine/context.scm b/src/guile/skribilo/engine/context.scm
new file mode 100644
index 0000000..48a069e
--- /dev/null
+++ b/src/guile/skribilo/engine/context.scm
@@ -0,0 +1,1382 @@
+;;;;
+;;;; context.skr	-- ConTeXt mode for Skribe
+;;;;
+;;;; Copyright © 2004 Erick Gallesio - I3S-CNRS/ESSI <eg@essi.fr>
+;;;;
+;;;;
+;;;; This program is free software; you can redistribute it and/or modify
+;;;; it under the terms of the GNU General Public License as published by
+;;;; the Free Software Foundation; either version 2 of the License, or
+;;;; (at your option) any later version.
+;;;;
+;;;; This program is distributed in the hope that it will be useful,
+;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;;; GNU General Public License for more details.
+;;;;
+;;;; You should have received a copy of the GNU General Public License
+;;;; along with this program; if not, write to the Free Software
+;;;; Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+;;;; USA.
+;;;;
+;;;;           Author: Erick Gallesio [eg@essi.fr]
+;;;;    Creation date: 23-Sep-2004 17:21 (eg)
+;;;; Last file update:  3-Nov-2004 12:54 (eg)
+;;;;
+
+(define-skribe-module (skribilo engine context))
+
+;;;; ======================================================================
+;;;;	context-customs ...
+;;;; ======================================================================
+(define context-customs
+  '((source-comment-color "#ffa600")
+    (source-error-color "red")
+    (source-define-color "#6959cf")
+    (source-module-color "#1919af")
+    (source-markup-color "#1919af")
+    (source-thread-color "#ad4386")
+    (source-string-color "red")
+    (source-bracket-color "red")
+    (source-type-color "#00cf00")
+    (index-page-ref #t)
+    (image-format ("jpg"))
+    (font-size 11)
+    (font-type "roman")
+    (user-style #f)
+    (document-style "book")))
+
+;;;; ======================================================================
+;;;;	context-encoding ...
+;;;; ======================================================================
+(define context-encoding
+  '((#\# "\\type{#}")
+    (#\| "\\type{|}")
+    (#\{ "$\\{$")
+    (#\} "$\\}$")
+    (#\~ "\\type{~}")
+    (#\& "\\type{&}")
+    (#\_ "\\type{_}")
+    (#\^ "\\type{^}")
+    (#\[ "\\type{[}")
+    (#\] "\\type{]}")
+    (#\< "\\type{<}")
+    (#\> "\\type{>}")
+    (#\$ "\\type{$}")
+    (#\% "\\%")
+    (#\\ "$\\backslash$")))
+
+;;;; ======================================================================
+;;;;	context-pre-encoding ...
+;;;; ======================================================================
+(define context-pre-encoding
+  (append '((#\space "~")
+	    (#\~ "\\type{~}"))
+	  context-encoding))
+
+
+;;;; ======================================================================
+;;;;	context-symbol-table ...
+;;;; ======================================================================
+(define (context-symbol-table math)
+   `(("iexcl" "!`")
+     ("cent" "c")
+     ("pound" "\\pounds")
+     ("yen" "Y")
+     ("section" "\\S")
+     ("mul" ,(math "^-"))
+     ("copyright" "\\copyright")
+     ("lguillemet" ,(math "\\ll"))
+     ("not" ,(math "\\neg"))
+     ("degree" ,(math "^{\\small{o}}"))
+     ("plusminus" ,(math "\\pm"))
+     ("micro" ,(math "\\mu"))
+     ("paragraph" "\\P")
+     ("middot" ,(math "\\cdot"))
+     ("rguillemet" ,(math "\\gg"))
+     ("1/4" ,(math "\\frac{1}{4}"))
+     ("1/2" ,(math "\\frac{1}{2}"))
+     ("3/4" ,(math "\\frac{3}{4}"))
+     ("iquestion" "?`")
+     ("Agrave" "\\`{A}")
+     ("Aacute" "\\'{A}")
+     ("Acircumflex" "\\^{A}")
+     ("Atilde" "\\~{A}")
+     ("Amul" "\\\"{A}")
+     ("Aring" "{\\AA}")
+     ("AEligature" "{\\AE}")
+     ("Oeligature" "{\\OE}")
+     ("Ccedilla" "{\\c{C}}")
+     ("Egrave" "{\\`{E}}")
+     ("Eacute" "{\\'{E}}")
+     ("Ecircumflex" "{\\^{E}}")
+     ("Euml" "\\\"{E}")
+     ("Igrave" "{\\`{I}}")
+     ("Iacute" "{\\'{I}}")
+     ("Icircumflex" "{\\^{I}}")
+     ("Iuml" "\\\"{I}")
+     ("ETH" "D")
+     ("Ntilde" "\\~{N}")
+     ("Ograve" "\\`{O}")
+     ("Oacute" "\\'{O}")
+     ("Ocurcumflex" "\\^{O}")
+     ("Otilde" "\\~{O}")
+     ("Ouml" "\\\"{O}")
+     ("times" ,(math "\\times"))
+     ("Oslash" "\\O")
+     ("Ugrave" "\\`{U}")
+     ("Uacute" "\\'{U}")
+     ("Ucircumflex" "\\^{U}")
+     ("Uuml" "\\\"{U}")
+     ("Yacute" "\\'{Y}")
+     ("szlig" "\\ss")
+     ("agrave" "\\`{a}")
+     ("aacute" "\\'{a}")
+     ("acircumflex" "\\^{a}")
+     ("atilde" "\\~{a}")
+     ("amul" "\\\"{a}")
+     ("aring" "\\aa")
+     ("aeligature" "\\ae")
+     ("oeligature" "{\\oe}")
+     ("ccedilla" "{\\c{c}}")
+     ("egrave" "{\\`{e}}")
+     ("eacute" "{\\'{e}}")
+     ("ecircumflex" "{\\^{e}}")
+     ("euml" "\\\"{e}")
+     ("igrave" "{\\`{\\i}}")
+     ("iacute" "{\\'{\\i}}")
+     ("icircumflex" "{\\^{\\i}}")
+     ("iuml" "\\\"{\\i}")
+     ("ntilde" "\\~{n}")
+     ("ograve" "\\`{o}")
+     ("oacute" "\\'{o}")
+     ("ocurcumflex" "\\^{o}")
+     ("otilde" "\\~{o}")
+     ("ouml" "\\\"{o}")
+     ("divide" ,(math "\\div"))
+     ("oslash" "\\o")
+     ("ugrave" "\\`{u}")
+     ("uacute" "\\'{u}")
+     ("ucircumflex" "\\^{u}")
+     ("uuml" "\\\"{u}")
+     ("yacute" "\\'{y}")
+     ("ymul" "\\\"{y}")
+     ;; Greek
+     ("Alpha" "A")
+     ("Beta" "B")
+     ("Gamma" ,(math "\\Gamma"))
+     ("Delta" ,(math "\\Delta"))
+     ("Epsilon" "E")
+     ("Zeta" "Z")
+     ("Eta" "H")
+     ("Theta" ,(math "\\Theta"))
+     ("Iota" "I")
+     ("Kappa" "K")
+     ("Lambda" ,(math "\\Lambda"))
+     ("Mu" "M")
+     ("Nu" "N")
+     ("Xi" ,(math "\\Xi"))
+     ("Omicron" "O")
+     ("Pi" ,(math "\\Pi"))
+     ("Rho" "P")
+     ("Sigma" ,(math "\\Sigma"))
+     ("Tau" "T")
+     ("Upsilon" ,(math "\\Upsilon"))
+     ("Phi" ,(math "\\Phi"))
+     ("Chi" "X")
+     ("Psi" ,(math "\\Psi"))
+     ("Omega" ,(math "\\Omega"))
+     ("alpha" ,(math "\\alpha"))
+     ("beta" ,(math "\\beta"))
+     ("gamma" ,(math "\\gamma"))
+     ("delta" ,(math "\\delta"))
+     ("epsilon" ,(math "\\varepsilon"))
+     ("zeta" ,(math "\\zeta"))
+     ("eta" ,(math "\\eta"))
+     ("theta" ,(math "\\theta"))
+     ("iota" ,(math "\\iota"))
+     ("kappa" ,(math "\\kappa"))
+     ("lambda" ,(math "\\lambda"))
+     ("mu" ,(math "\\mu"))
+     ("nu" ,(math "\\nu"))
+     ("xi" ,(math "\\xi"))
+     ("omicron" ,(math "\\o"))
+     ("pi" ,(math "\\pi"))
+     ("rho" ,(math "\\rho"))
+     ("sigmaf" ,(math "\\varsigma"))
+     ("sigma" ,(math "\\sigma"))
+     ("tau" ,(math "\\tau"))
+     ("upsilon" ,(math "\\upsilon"))
+     ("phi" ,(math "\\varphi"))
+     ("chi" ,(math "\\chi"))
+     ("psi" ,(math "\\psi"))
+     ("omega" ,(math "\\omega"))
+     ("thetasym" ,(math "\\vartheta"))
+     ("piv" ,(math "\\varpi"))
+     ;; punctuation
+     ("bullet" ,(math "\\bullet"))
+     ("ellipsis" ,(math "\\ldots"))
+     ("weierp" ,(math "\\wp"))
+     ("image" ,(math "\\Im"))
+     ("real" ,(math "\\Re"))
+     ("tm" ,(math "^{\\sc\\tiny{tm}}"))
+     ("alef" ,(math "\\aleph"))
+     ("<-" ,(math "\\leftarrow"))
+     ("<--" ,(math "\\longleftarrow"))
+     ("uparrow" ,(math "\\uparrow"))
+     ("->" ,(math "\\rightarrow"))
+     ("-->" ,(math "\\longrightarrow"))
+     ("downarrow" ,(math "\\downarrow"))
+     ("<->" ,(math "\\leftrightarrow"))
+     ("<-->" ,(math "\\longleftrightarrow"))
+     ("<+" ,(math "\\hookleftarrow"))
+     ("<=" ,(math "\\Leftarrow"))
+     ("<==" ,(math "\\Longleftarrow"))
+     ("Uparrow" ,(math "\\Uparrow"))
+     ("=>" ,(math "\\Rightarrow"))
+     ("==>" ,(math "\\Longrightarrow"))
+     ("Downarrow" ,(math "\\Downarrow"))
+     ("<=>" ,(math "\\Leftrightarrow"))
+     ("<==>" ,(math "\\Longleftrightarrow"))
+     ;; Mathematical operators
+     ("forall" ,(math "\\forall"))
+     ("partial" ,(math "\\partial"))
+     ("exists" ,(math "\\exists"))
+     ("emptyset" ,(math "\\emptyset"))
+     ("infinity" ,(math "\\infty"))
+     ("nabla" ,(math "\\nabla"))
+     ("in" ,(math "\\in"))
+     ("notin" ,(math "\\notin"))
+     ("ni" ,(math "\\ni"))
+     ("prod" ,(math "\\Pi"))
+     ("sum" ,(math "\\Sigma"))
+     ("asterisk" ,(math "\\ast"))
+     ("sqrt" ,(math "\\surd"))
+     ("propto" ,(math "\\propto"))
+     ("angle" ,(math "\\angle"))
+     ("and" ,(math "\\wedge"))
+     ("or" ,(math "\\vee"))
+     ("cap" ,(math "\\cap"))
+     ("cup" ,(math "\\cup"))
+     ("integral" ,(math "\\int"))
+     ("models" ,(math "\\models"))
+     ("vdash" ,(math "\\vdash"))
+     ("dashv" ,(math "\\dashv"))
+     ("sim" ,(math "\\sim"))
+     ("cong" ,(math "\\cong"))
+     ("approx" ,(math "\\approx"))
+     ("neq" ,(math "\\neq"))
+     ("equiv" ,(math "\\equiv"))
+     ("le" ,(math "\\leq"))
+     ("ge" ,(math "\\geq"))
+     ("subset" ,(math "\\subset"))
+     ("supset" ,(math "\\supset"))
+     ("subseteq" ,(math "\\subseteq"))
+     ("supseteq" ,(math "\\supseteq"))
+     ("oplus" ,(math "\\oplus"))
+     ("otimes" ,(math "\\otimes"))
+     ("perp" ,(math "\\perp"))
+     ("mid" ,(math "\\mid"))
+     ("lceil" ,(math "\\lceil"))
+     ("rceil" ,(math "\\rceil"))
+     ("lfloor" ,(math "\\lfloor"))
+     ("rfloor" ,(math "\\rfloor"))
+     ("langle" ,(math "\\langle"))
+     ("rangle" ,(math "\\rangle"))
+     ;; Misc
+     ("loz" ,(math "\\diamond"))
+     ("spades" ,(math "\\spadesuit"))
+     ("clubs" ,(math "\\clubsuit"))
+     ("hearts" ,(math "\\heartsuit"))
+     ("diams" ,(math "\\diamondsuit"))
+     ("euro" "\\euro{}")
+     ;; ConTeXt
+     ("dag" "\\dag")
+     ("ddag" "\\ddag")
+     ("circ" ,(math "\\circ"))
+     ("top" ,(math "\\top"))
+     ("bottom" ,(math "\\bot"))
+     ("lhd" ,(math "\\triangleleft"))
+     ("rhd" ,(math "\\triangleright"))
+     ("parallel" ,(math "\\parallel"))))
+
+;;;; ======================================================================
+;;;;	context-width
+;;;; ======================================================================
+(define (context-width width)
+  (cond
+    ((string? width)
+     width)
+    ((and (number? width) (inexact? width))
+     (string-append (number->string (/ width 100.)) "\\textwidth"))
+    (else
+     (string-append (number->string width) "pt"))))
+
+;;;; ======================================================================
+;;;;	context-dim
+;;;; ======================================================================
+(define (context-dim dimension)
+  (cond
+    ((string? dimension)
+     dimension)
+    ((number? dimension)
+     (string-append (number->string (inexact->exact (round dimension)))
+		    "pt"))))
+
+;;;; ======================================================================
+;;;;	context-url
+;;;; ======================================================================
+(define(context-url url text e)
+  (let ((name (gensym 'url))
+	(text (or text url)))
+    (printf "\\useURL[~A][~A][][" name url)
+    (output text e)
+    (printf "]\\from[~A]" name)))
+
+;;;; ======================================================================
+;;;;	Color Management ...
+;;;; ======================================================================
+(define *skribe-context-color-table* (make-hashtable))
+
+(define (skribe-color->context-color spec)
+  (receive (r g b)
+     (skribe-color->rgb spec)
+     (let ((ff (exact->inexact #xff)))
+       (format "r=~a,g=~a,b=~a"
+	       (number->string (/ r ff))
+	       (number->string (/ g ff))
+	       (number->string (/ b ff))))))
+
+
+(define (skribe-declare-used-colors)
+  (printf "\n%%Colors\n")
+  (for-each (lambda (spec)
+	      (let ((c (hashtable-get *skribe-context-color-table* spec)))
+		(unless (string? c)
+		  ;; Color was never used before
+		  (let ((name (symbol->string (gensym 'col))))
+		    (hashtable-put! *skribe-context-color-table* spec name)
+		    (printf "\\definecolor[~A][~A]\n"
+			    name
+			    (skribe-color->context-color spec))))))
+	    (skribe-get-used-colors))
+  (newline))
+
+(define (skribe-declare-standard-colors engine)
+  (for-each (lambda (x)
+	      (skribe-use-color! (engine-custom engine x)))
+	    '(source-comment-color source-define-color source-module-color
+	      source-markup-color  source-thread-color source-string-color
+	      source-bracket-color source-type-color)))
+
+(define (skribe-get-color spec)
+  (let ((c (and (hashtable? *skribe-context-color-table*)
+		(hashtable-get *skribe-context-color-table* spec))))
+    (if (not (string? c))
+	(skribe-error 'context "Can't find color" spec)
+	c)))
+
+;;;; ======================================================================
+;;;;	context-engine ...
+;;;; ======================================================================
+(define context-engine
+   (default-engine-set!
+      (make-engine 'context
+	 :version 1.0
+	 :format "context"
+	 :delegate (find-engine 'base)
+	 :filter (make-string-replace context-encoding)
+	 :symbol-table (context-symbol-table (lambda (m) (format "$~a$" m)))
+	 :custom context-customs)))
+
+;;;; ======================================================================
+;;;;	document ...
+;;;; ======================================================================
+(markup-writer 'document
+   :options '(:title :subtitle :author :ending :env)
+   :before (lambda (n e)
+	     ;; Prelude
+	     (printf "% interface=en output=pdftex\n")
+	     (display "%%%% -*- TeX -*-\n")
+	     (printf "%%%% File automatically generated by Skribe ~A on ~A\n\n"
+		     (skribe-release) (date))
+	     ;; Make URLs active
+	     (printf "\\setupinteraction[state=start]\n")
+	     ;; Choose the document font
+	     (printf "\\setupbodyfont[~a,~apt]\n" (engine-custom e 'font-type)
+		     (engine-custom e 'font-size))
+	     ;; Color
+	     (display "\\setupcolors[state=start]\n")
+	     ;; Load Style
+	     (printf "\\input skribe-context-~a.tex\n"
+		     (engine-custom e 'document-style))
+	     ;; Insert User customization
+	     (let ((s (engine-custom e 'user-style)))
+	       (when s (printf "\\input ~a\n" s)))
+	     ;; Output used colors
+	     (skribe-declare-standard-colors e)
+	     (skribe-declare-used-colors)
+
+	     (display "\\starttext\n\\StartTitlePage\n")
+	     ;; title
+	     (let ((t (markup-option n :title)))
+	       (when t
+		 (skribe-eval (new markup
+				   (markup '&context-title)
+				   (body t)
+				   (options
+				      `((subtitle ,(markup-option n :subtitle)))))
+			      e
+			      :env `((parent ,n)))))
+	     ;; author(s)
+	     (let ((a (markup-option n :author)))
+	       (when a
+		 (if (list? a)
+		     ;; List of authors. Use multi-columns
+		     (begin
+		       (printf "\\defineparagraphs[Authors][n=~A]\n" (length a))
+		       (display "\\startAuthors\n")
+		       (let Loop ((l a))
+			 (unless (null? l)
+			   (output (car l) e)
+			   (unless (null? (cdr l))
+			     (display "\\nextAuthors\n")
+			     (Loop (cdr l)))))
+		       (display "\\stopAuthors\n\n"))
+		     ;; One author, that's easy
+		     (output a e))))
+	     ;; End of the title
+	     (display "\\StopTitlePage\n"))
+   :after (lambda (n e)
+	     (display "\n\\stoptext\n")))
+
+
+
+;;;; ======================================================================
+;;;;	&context-title ...
+;;;; ======================================================================
+(markup-writer '&context-title
+   :before "{\\DocumentTitle{"
+   :action (lambda (n e)
+	     (output (markup-body n) e)
+	     (let ((sub (markup-option n 'subtitle)))
+	       (when sub
+		 (display "\\\\\n\\switchtobodyfont[16pt]\\it{")
+		 (output sub e)
+		 (display "}\n"))))
+   :after "}}")
+
+;;;; ======================================================================
+;;;;	author ...
+;;;; ======================================================================
+(markup-writer 'author
+   :options '(:name :title :affiliation :email :url :address :phone :photo :align)
+   :action (lambda (n e)
+	     (let ((name        (markup-option n :name))
+		   (title       (markup-option n :title))
+		   (affiliation (markup-option n :affiliation))
+		   (email       (markup-option n :email))
+		   (url         (markup-option n :url))
+		   (address     (markup-option n :address))
+		   (phone       (markup-option n :phone))
+		   (out         (lambda (n)
+				  (output n e)
+				  (display "\\\\\n"))))
+	       (display "{\\midaligned{")
+	       (when name	(out name))
+	       (when title	(out title))
+	       (when affiliation	(out affiliation))
+	       (when (pair? address)	(for-each out address))
+	       (when phone		(out phone))
+	       (when email		(out email))
+	       (when url		(out url))
+	       (display "}}\n"))))
+
+
+;;;; ======================================================================
+;;;;	toc ...
+;;;; ======================================================================
+(markup-writer 'toc
+   :options '()
+   :action (lambda (n e) (display "\\placecontent\n")))
+
+;;;; ======================================================================
+;;;;	context-block-before ...
+;;;; ======================================================================
+(define (context-block-before name name-unnum)
+   (lambda (n e)
+      (let ((num (markup-option n :number)))
+	 (printf "\n\n%% ~a\n" (string-canonicalize (markup-ident n)))
+	 (printf "\\~a[~a]{" (if num name name-unnum)
+		 (string-canonicalize (markup-ident n)))
+	 (output (markup-option n :title) e)
+	 (display "}\n"))))
+
+
+;;;; ======================================================================
+;;;;	chapter, section,  ...
+;;;; ======================================================================
+(markup-writer 'chapter
+   :options '(:title :number :toc :file :env)
+   :before (context-block-before 'chapter 'title))
+
+
+(markup-writer 'section
+   :options '(:title :number :toc :file :env)
+   :before (context-block-before 'section 'subject))
+
+
+(markup-writer 'subsection
+   :options '(:title :number :toc :file :env)
+   :before (context-block-before 'subsection 'subsubject))
+
+
+(markup-writer 'subsubsection
+   :options '(:title :number :toc :file :env)
+   :before (context-block-before 'subsubsection 'subsubsubject))
+
+;;;; ======================================================================
+;;;;    paragraph ...
+;;;; ======================================================================
+(markup-writer 'paragraph
+   :options '(:title :number :toc :env)
+   :after "\\par\n")
+
+;;;; ======================================================================
+;;;;	footnote ...
+;;;; ======================================================================
+(markup-writer 'footnote
+   :before "\\footnote{"
+   :after "}")
+
+;;;; ======================================================================
+;;;;	linebreak ...
+;;;; ======================================================================
+(markup-writer 'linebreak
+   :action "\\crlf ")
+
+;;;; ======================================================================
+;;;;	hrule ...
+;;;; ======================================================================
+(markup-writer 'hrule
+   :options '(:width :height)
+   :before (lambda (n e)
+	     (printf "\\blackrule[width=~A,height=~A]\n"
+		     (context-width  (markup-option n :width))
+		     (context-dim    (markup-option n :height)))))
+
+;;;; ======================================================================
+;;;;	color ...
+;;;; ======================================================================
+(markup-writer 'color
+   :options '(:bg :fg :width :margin :border)
+   :before (lambda (n e)
+	     (let ((bg (markup-option n :bg))
+		   (fg (markup-option n :fg))
+		   (w  (markup-option n :width))
+		   (m  (markup-option n :margin))
+		   (b  (markup-option n :border))
+		   (c  (markup-option n :round-corner)))
+	       (if (or bg w m b)
+		   (begin
+		     (printf "\\startframedtext[width=~a" (if w
+							      (context-width w)
+							      "fit"))
+		     (printf ",rulethickness=~A" (if b (context-width b) "0pt"))
+		     (when m
+		       (printf ",offset=~A" (context-width m)))
+		     (when bg
+		       (printf ",background=color,backgroundcolor=~A"
+			       (skribe-get-color bg)))
+		     (when fg
+		       (printf ",foregroundcolor=~A"
+			       (skribe-get-color fg)))
+		     (when c
+		       (display ",framecorner=round"))
+		     (printf "]\n"))
+		   ;; Probably just a foreground was specified
+		   (when fg
+		     (printf "\\startcolor[~A] " (skribe-get-color fg))))))
+   :after (lambda (n e)
+	    (let ((bg (markup-option n :bg))
+		   (fg (markup-option n :fg))
+		   (w  (markup-option n :width))
+		   (m  (markup-option n :margin))
+		   (b  (markup-option n :border)))
+	      (if (or bg w m b)
+		(printf "\\stopframedtext ")
+		(when fg
+		  (printf "\\stopcolor "))))))
+;;;; ======================================================================
+;;;;	frame ...
+;;;; ======================================================================
+(markup-writer 'frame
+   :options '(:width :border :margin)
+   :before (lambda (n e)
+	     (let ((m (markup-option n :margin))
+		   (w (markup-option n :width))
+		   (b (markup-option n :border))
+		   (c (markup-option n :round-corner)))
+	       (printf "\\startframedtext[width=~a" (if w
+							(context-width w)
+							"fit"))
+	       (printf ",rulethickness=~A" (context-dim b))
+	       (printf ",offset=~A" (context-width m))
+	       (when c
+		 (display ",framecorner=round"))
+	       (printf "]\n")))
+   :after "\\stopframedtext ")
+
+;;;; ======================================================================
+;;;;	font ...
+;;;; ======================================================================
+(markup-writer 'font
+   :options '(:size)
+   :action (lambda (n e)
+	     (let* ((size (markup-option n :size))
+		    (cs   (engine-custom e 'font-size))
+		    (ns   (cond
+			    ((and (integer? size) (exact? size))
+			     (if (> size 0)
+				 size
+				 (+ cs size)))
+			    ((and (number? size) (inexact? size))
+			     (+ cs (inexact->exact size)))
+			    ((string? size)
+			     (let ((nb (string->number size)))
+			       (if (not (number? nb))
+				   (skribe-error
+				    'font
+				    (format "Illegal font size ~s" size)
+				    nb)
+				   (+ cs nb))))))
+		     (ne (make-engine (gensym 'context)
+				      :delegate e
+				      :filter (engine-filter e)
+				      :symbol-table (engine-symbol-table e)
+				      :custom `((font-size ,ns)
+						,@(engine-customs e)))))
+	       (printf "{\\switchtobodyfont[~apt]" ns)
+	       (output (markup-body n) ne)
+	       (display "}"))))
+
+
+;;;; ======================================================================
+;;;;    flush ...
+;;;; ======================================================================
+(markup-writer 'flush
+   :options '(:side)
+   :before (lambda (n e)
+	     (case (markup-option n :side)
+		 ((center)
+		  (display "\n\n\\midaligned{"))
+		 ((left)
+		  (display "\n\n\\leftaligned{"))
+		 ((right)
+		  (display "\n\n\\rightaligned{"))))
+   :after "}\n")
+
+;*---------------------------------------------------------------------*/
+;*    center ...                                                       */
+;*---------------------------------------------------------------------*/
+(markup-writer 'center
+   :before "\n\n\\midaligned{"
+   :after "}\n")
+
+;;;; ======================================================================
+;;;;   pre ...
+;;;; ======================================================================
+(markup-writer 'pre
+   :before "{\\tt\n\\startlines\n\\fixedspaces\n"
+   :action (lambda (n e)
+	     (let ((ne (make-engine
+			  (gensym 'context)
+			  :delegate e
+			  :filter (make-string-replace context-pre-encoding)
+			  :symbol-table (engine-symbol-table e)
+			  :custom (engine-customs e))))
+	       (output (markup-body n) ne)))
+   :after  "\n\\stoplines\n}")
+
+;;;; ======================================================================
+;;;;	prog ...
+;;;; ======================================================================
+(markup-writer 'prog
+   :options '(:line :mark)
+   :before "{\\tt\n\\startlines\n\\fixedspaces\n"
+   :action (lambda (n e)
+	     (let ((ne (make-engine
+			  (gensym 'context)
+			  :delegate e
+			  :filter (make-string-replace context-pre-encoding)
+			  :symbol-table (engine-symbol-table e)
+			  :custom (engine-customs e))))
+	       (output (markup-body n) ne)))
+   :after  "\n\\stoplines\n}")
+
+
+;;;; ======================================================================
+;;;;    itemize, enumerate ...
+;;;; ======================================================================
+(define (context-itemization-action n e descr?)
+  (let ((symbol (markup-option n :symbol)))
+    (for-each (lambda (item)
+		(if symbol
+		    (begin
+		      (display "\\sym{")
+		      (output symbol e)
+		      (display "}"))
+		    ;; output a \item iff not a description
+		    (unless descr?
+		      (display "  \\item ")))
+		(output item e)
+		(newline))
+	      (markup-body n))))
+
+(markup-writer 'itemize
+   :options '(:symbol)
+   :before "\\startnarrower[left]\n\\startitemize[serried]\n"
+   :action (lambda (n e) (context-itemization-action n e #f))
+   :after "\\stopitemize\n\\stopnarrower\n")
+
+
+(markup-writer 'enumerate
+   :options '(:symbol)
+   :before "\\startnarrower[left]\n\\startitemize[n][standard]\n"
+   :action (lambda (n e) (context-itemization-action n e #f))
+   :after "\\stopitemize\n\\stopnarrower\n")
+
+;;;; ======================================================================
+;;;;    description ...
+;;;; ======================================================================
+(markup-writer 'description
+   :options '(:symbol)
+   :before "\\startnarrower[left]\n\\startitemize[serried]\n"
+   :action (lambda (n e) (context-itemization-action n e #t))
+   :after "\\stopitemize\n\\stopnarrower\n")
+
+;;;; ======================================================================
+;;;;    item ...
+;;;; ======================================================================
+(markup-writer 'item
+   :options '(:key)
+   :action (lambda (n e)
+	     (let ((k (markup-option n :key)))
+	       (when k
+		 ;; Output the key(s)
+		 (let Loop ((l (if (pair? k) k (list k))))
+		   (unless (null? l)
+		     (output (bold (car l)) e)
+		     (unless (null? (cdr l))
+		       (display "\\crlf\n"))
+		     (Loop (cdr l))))
+		 (display "\\nowhitespace\\startnarrower[left]\n"))
+	       ;; Output body
+	       (output (markup-body n) e)
+	       ;; Terminate
+	       (when k
+		 (display "\n\\stopnarrower\n")))))
+
+;;;; ======================================================================
+;;;;	blockquote ...
+;;;; ======================================================================
+(markup-writer 'blockquote
+   :before "\n\\startnarrower[left,right]\n"
+   :after  "\n\\stopnarrower\n")
+
+
+;;;; ======================================================================
+;;;;	figure ...
+;;;; ======================================================================
+(markup-writer 'figure
+   :options '(:legend :number :multicolumns)
+   :action (lambda (n e)
+	     (let ((ident (markup-ident n))
+		   (number (markup-option n :number))
+		   (legend (markup-option n :legend)))
+	       (unless number
+		 (display "{\\setupcaptions[number=off]\n"))
+	       (display "\\placefigure\n")
+	       (printf "  [~a]\n" (string-canonicalize ident))
+	       (display "  {") (output legend e) (display "}\n")
+	       (display "  {") (output (markup-body n) e) (display "}")
+	       (unless number
+		 (display "}\n")))))
+
+;;;; ======================================================================
+;;;;    table ...
+;;;; ======================================================================
+						;; width doesn't work
+(markup-writer 'table
+   :options '(:width :border :frame :rules :cellpadding)
+   :before (lambda (n e)
+	     (let ((width  (markup-option n :width))
+		   (border (markup-option n :border))
+		   (frame  (markup-option n :frame))
+		   (rules  (markup-option n :rules))
+		   (cstyle (markup-option n :cellstyle))
+		   (cp     (markup-option n :cellpadding))
+		   (cs     (markup-option n :cellspacing)))
+	       (printf "\n{\\bTABLE\n")
+	       (printf "\\setupTABLE[")
+	       (printf "width=~A" (if width (context-width width) "fit"))
+	       (when border
+		 (printf ",rulethickness=~A" (context-dim border)))
+	       (when cp
+		 (printf ",offset=~A" (context-width cp)))
+	       (printf ",frame=off]\n")
+
+	       (when rules
+		 (let ((hor  "\\setupTABLE[row][bottomframe=on,topframe=on]\n")
+		       (vert "\\setupTABLE[c][leftframe=on,rightframe=on]\n"))
+		   (case rules
+		     ((rows) (display hor))
+		     ((cols) (display vert))
+		     ((all)  (display hor) (display vert)))))
+
+	       (when frame
+		 ;;  hsides, vsides, lhs, rhs, box, border
+		 (let ((top   "\\setupTABLE[row][first][frame=off,topframe=on]\n")
+		       (bot   "\\setupTABLE[row][last][frame=off,bottomframe=on]\n")
+		       (left  "\\setupTABLE[c][first][frame=off,leftframe=on]\n")
+		       (right "\\setupTABLE[c][last][frame=off,rightframe=on]\n"))
+		 (case frame
+		   ((above)      (display top))
+		   ((below)      (display bot))
+		   ((hsides)     (display top) (display bot))
+		   ((lhs)        (display left))
+		   ((rhs)        (display right))
+		   ((vsides)     (display left) (diplay right))
+		   ((box border) (display top)  (display bot)
+				 (display left) (display right)))))))
+
+   :after  (lambda (n e)
+	     (printf "\\eTABLE}\n")))
+
+
+;;;; ======================================================================
+;;;;    tr ...
+;;;; ======================================================================
+(markup-writer 'tr
+   :options '(:bg)
+   :before (lambda (n e)
+	     (display "\\bTR")
+	     (let ((bg (markup-option n :bg)))
+	       (when bg
+		 (printf "[background=color,backgroundcolor=~A]"
+			 (skribe-get-color bg)))))
+   :after  "\\eTR\n")
+
+
+;;;; ======================================================================
+;;;;    tc ...
+;;;; ======================================================================
+(markup-writer 'tc
+   :options '(:width :align :valign :colspan)
+   :before (lambda (n e)
+	     (let ((th?     (eq? 'th (markup-option n 'markup)))
+		   (width   (markup-option n :width))
+		   (align   (markup-option n :align))
+		   (valign  (markup-option n :valign))
+		   (colspan (markup-option n :colspan))
+		   (rowspan (markup-option n :rowspan))
+		   (bg      (markup-option n :bg)))
+	       (printf "\\bTD[")
+	       (printf "width=~a" (if width (context-width width) "fit"))
+	       (when valign
+		 ;; This is buggy. In fact valign an align can't be both
+		 ;; specified in ConTeXt
+		 (printf ",align=~a" (case valign
+				       ((center) 'lohi)
+				       ((bottom) 'low)
+				       ((top)    'high))))
+	       (when align
+		 (printf ",align=~a" (case align
+				       ((left) 'right) ; !!!!
+				       ((right) 'left) ; !!!!
+				       (else    'middle))))
+	       (unless (equal? colspan 1)
+		 (printf ",nx=~a" colspan))
+	       (display "]")
+	       (when th?
+		 ;; This is a TH, output is bolded
+		 (display "{\\bf{"))))
+
+   :after (lambda (n e)
+	     (when (equal? (markup-option n 'markup) 'th)
+	       ;; This is a TH, output is bolded
+	       (display "}}"))
+	     (display "\\eTD")))
+
+;;;; ======================================================================
+;;;;	image ...
+;;;; ======================================================================
+(markup-writer 'image
+   :options '(:file :url :width :height :zoom)
+   :action (lambda (n e)
+	     (let* ((file   (markup-option n :file))
+		    (url    (markup-option n :url))
+		    (width  (markup-option n :width))
+		    (height (markup-option n :height))
+		    (zoom   (markup-option n :zoom))
+		    (body   (markup-body n))
+		    (efmt   (engine-custom e 'image-format))
+		    (img    (or url (convert-image file
+						   (if (list? efmt)
+						       efmt
+						       '("jpg"))))))
+	       (if (not (string? img))
+		   (skribe-error 'context "Illegal image" file)
+		   (begin
+		     (printf "\\externalfigure[~A][frame=off" (strip-ref-base img))
+		     (if zoom   (printf ",factor=~a"   (inexact->exact zoom)))
+		     (if width  (printf ",width=~a"    (context-width width)))
+		     (if height (printf ",height=~apt" (context-dim height)))
+		     (display "]"))))))
+
+
+;;;; ======================================================================
+;;;;   Ornaments ...
+;;;; ======================================================================
+(markup-writer 'roman :before "{\\rm{" :after "}}")
+(markup-writer 'bold :before "{\\bf{" :after "}}")
+(markup-writer 'underline :before  "{\\underbar{" :after "}}")
+(markup-writer 'emph :before "{\\em{" :after "}}")
+(markup-writer 'it :before "{\\it{" :after "}}")
+(markup-writer 'code :before "{\\tt{" :after "}}")
+(markup-writer 'var :before "{\\tt{" :after "}}")
+(markup-writer 'sc :before "{\\sc{" :after "}}")
+;;//(markup-writer 'sf :before "{\\sf{" :after "}}")
+(markup-writer 'sub :before "{\\low{" :after "}}")
+(markup-writer 'sup :before "{\\high{" :after "}}")
+
+
+;;//
+;;//(markup-writer 'tt
+;;//   :before "{\\texttt{"
+;;//   :action (lambda (n e)
+;;//	      (let ((ne (make-engine
+;;//			   (gensym 'latex)
+;;//			   :delegate e
+;;//			   :filter (make-string-replace latex-tt-encoding)
+;;//			   :custom (engine-customs e)
+;;//			   :symbol-table (engine-symbol-table e))))
+;;//		 (output (markup-body n) ne)))
+;;//   :after "}}")
+
+;;;; ======================================================================
+;;;;    q ...
+;;;; ======================================================================
+(markup-writer 'q
+   :before "\\quotation{"
+   :after "}")
+
+;;;; ======================================================================
+;;;;    mailto ...
+;;;; ======================================================================
+(markup-writer 'mailto
+   :options '(:text)
+   :action (lambda (n e)
+	     (let ((text (markup-option n :text))
+		   (url  (markup-body n)))
+	       (when (pair? url)
+		 (context-url (format "mailto:~A" (car url))
+			      (or text
+				  (car url))
+			      e)))))
+;;;; ======================================================================
+;;;;   mark ...
+;;;; ======================================================================
+(markup-writer 'mark
+   :before (lambda (n e)
+	      (printf "\\reference[~a]{}\n"
+		      (string-canonicalize (markup-ident n)))))
+
+;;;; ======================================================================
+;;;;   ref ...
+;;;; ======================================================================
+(markup-writer 'ref
+   :options '(:text :chapter :section :subsection :subsubsection
+	      :figure :mark :handle :page)
+   :action (lambda (n e)
+	      (let* ((text (markup-option n :text))
+		     (page (markup-option n :page))
+		     (c    (handle-ast (markup-body n)))
+		     (id   (markup-ident c)))
+		(cond
+		  (page ;; Output the page only (this is a hack)
+		     (when text (output text e))
+		     (printf "\\at[~a]"
+			     (string-canonicalize id)))
+		  ((or (markup-option n :chapter)
+		       (markup-option n :section)
+		       (markup-option n :subsection)
+		       (markup-option n :subsubsection))
+		   (if text
+		       (printf "\\goto{~a}[~a]" (or text id)
+			       (string-canonicalize id))
+		       (printf "\\in[~a]" (string-canonicalize id))))
+		  ((markup-option n :mark)
+		     (printf "\\goto{~a}[~a]"
+			     (or text id)
+			     (string-canonicalize id)))
+		  (else ;; Output a little image indicating the direction
+		      (printf "\\in[~a]" (string-canonicalize id)))))))
+
+;;;; ======================================================================
+;;;;   bib-ref ...
+;;;; ======================================================================
+(markup-writer 'bib-ref
+   :options '(:text :bib)
+   :before (lambda (n e) (output "[" e))
+   :action (lambda (n e)
+	     (let* ((obj   (handle-ast (markup-body n)))
+		    (title (markup-option obj :title))
+		    (ref   (markup-option title 'number))
+		    (ident (markup-ident obj)))
+	       (printf "\\goto{~a}[~a]" ref (string-canonicalize ident))))
+   :after (lambda (n e) (output "]" e)))
+
+;;;; ======================================================================
+;;;;   bib-ref+ ...
+;;;; ======================================================================
+(markup-writer 'bib-ref+
+   :options '(:text :bib)
+   :before (lambda (n e) (output "[" e))
+   :action (lambda (n e)
+	      (let loop ((rs (markup-body n)))
+		 (cond
+		    ((null? rs)
+		     #f)
+		    (else
+		     (if (is-markup? (car rs) 'bib-ref)
+			 (invoke (writer-action (markup-writer-get 'bib-ref e))
+				 (car rs)
+				 e)
+			 (output (car rs) e))
+		     (if (pair? (cdr rs))
+			 (begin
+			    (display ",")
+			    (loop (cdr rs))))))))
+   :after (lambda (n e) (output "]" e)))
+
+;;;; ======================================================================
+;;;;	url-ref ...
+;;;; ======================================================================
+(markup-writer 'url-ref
+   :options '(:url :text)
+   :action (lambda (n e)
+	     (context-url (markup-option n :url) (markup-option n :text) e)))
+
+;;//;*---------------------------------------------------------------------*/
+;;//;*    line-ref ...                                                     */
+;;//;*---------------------------------------------------------------------*/
+;;//(markup-writer 'line-ref
+;;//   :options '(:offset)
+;;//   :before "{\\textit{"
+;;//   :action (lambda (n e)
+;;//	      (let ((o (markup-option n :offset))
+;;//		    (v (string->number (markup-option n :text))))
+;;//		 (cond
+;;//		    ((and (number? o) (number? v))
+;;//		     (display (+ o v)))
+;;//		    (else
+;;//		     (display v)))))
+;;//   :after "}}")
+
+
+;;;; ======================================================================
+;;;;	&the-bibliography ...
+;;;; ======================================================================
+(markup-writer '&the-bibliography
+   :before "\n% Bibliography\n\n")
+
+
+;;;; ======================================================================
+;;;;	&bib-entry ...
+;;;; ======================================================================
+(markup-writer '&bib-entry
+   :options '(:title)
+   :action (lambda (n e)
+	     (skribe-eval (mark (markup-ident n)) e)
+	     (output n e (markup-writer-get '&bib-entry-label e))
+	     (output n e (markup-writer-get '&bib-entry-body e)))
+   :after "\n\n")
+
+;;;; ======================================================================
+;;;;	&bib-entry-label ...
+;;;; ======================================================================
+(markup-writer '&bib-entry-label
+   :options '(:title)
+   :before (lambda (n e) (output "[" e))
+   :action (lambda (n e) (output (markup-option n :title) e))
+   :after  (lambda (n e) (output "] "e)))
+
+;;;; ======================================================================
+;;;;	&bib-entry-title ...
+;;;; ======================================================================
+(markup-writer '&bib-entry-title
+   :action (lambda (n e)
+	     (let* ((t  (bold (markup-body n)))
+		    (en (handle-ast (ast-parent n)))
+		    (url #f ) ;;;;;;;;;;;;;;;// (markup-option en 'url))
+		    (ht (if url (ref :url (markup-body url) :text t) t)))
+	       (skribe-eval ht e))))
+
+
+;;//;*---------------------------------------------------------------------*/
+;;//;*    &bib-entry-url ...                                               */
+;;//;*---------------------------------------------------------------------*/
+;;//(markup-writer '&bib-entry-url
+;;//   :action (lambda (n e)
+;;//	      (let* ((en (handle-ast (ast-parent n)))
+;;//		     (url (markup-option en 'url))
+;;//		     (t (bold (markup-body url))))
+;;//		 (skribe-eval (ref :url (markup-body url) :text t) e))))
+
+
+;;;; ======================================================================
+;;;;	&the-index ...
+;;;; ======================================================================
+(markup-writer '&the-index
+   :options '(:column)
+   :action
+   (lambda (n e)
+     (define (make-mark-entry n)
+       (display "\\blank[medium]\n{\\bf\\it\\tfc{")
+       (skribe-eval (bold n) e)
+       (display "}}\\crlf\n"))
+
+     (define (make-primary-entry n)
+       (let ((b (markup-body n)))
+	 (markup-option-add! b :text (list (markup-option b :text) ", "))
+	 (markup-option-add! b :page #t)
+	 (output n e)))
+
+     (define (make-secondary-entry n)
+       (let* ((note (markup-option n :note))
+	      (b    (markup-body n))
+	      (bb   (markup-body b)))
+	 (if note
+	     (begin   ;; This is another entry
+	       (display "\\crlf\n ... ")
+	       (markup-option-add! b :text (list note ", ")))
+	     (begin   ;; another line on an entry
+	       (markup-option-add! b :text ", ")))
+	 (markup-option-add! b :page #t)
+	 (output n e)))
+
+     ;; Writer body starts here
+     (let ((col  (markup-option n :column)))
+       (when col
+	 (printf "\\startcolumns[n=~a]\n" col))
+       (for-each (lambda (item)
+		   ;;(DEBUG "ITEM= ~S" item)
+		   (if (pair? item)
+		       (begin
+			 (make-primary-entry (car item))
+			 (for-each (lambda (x) (make-secondary-entry x))
+				   (cdr item)))
+		       (make-mark-entry item))
+		   (display "\\crlf\n"))
+		 (markup-body n))
+       (when col
+	 (printf "\\stopcolumns\n")))))
+
+;;;; ======================================================================
+;;;;    &source-comment ...
+;;;; ======================================================================
+(markup-writer '&source-comment
+   :action (lambda (n e)
+	      (let* ((cc (engine-custom e 'source-comment-color))
+		     (n1 (it (markup-body n)))
+		     (n2 (if (and (engine-custom e 'source-color) cc)
+			     (color :fg cc n1)
+			     n1)))
+		 (skribe-eval n2 e))))
+
+;;;; ======================================================================
+;;;;    &source-line-comment ...
+;;;; ======================================================================
+(markup-writer '&source-line-comment
+   :action (lambda (n e)
+	      (let* ((cc (engine-custom e 'source-comment-color))
+		     (n1 (bold (markup-body n)))
+		     (n2 (if (and (engine-custom e 'source-color) cc)
+			     (color :fg cc n1)
+			     n1)))
+		 (skribe-eval n2 e))))
+
+;;;; ======================================================================
+;;;;    &source-keyword ...
+;;;; ======================================================================
+(markup-writer '&source-keyword
+   :action (lambda (n e)
+	      (skribe-eval (it (markup-body n)) e)))
+
+;;;; ======================================================================
+;;;;    &source-error ...
+;;;; ======================================================================
+(markup-writer '&source-error
+   :action (lambda (n e)
+	      (let* ((cc (engine-custom e 'source-error-color))
+		     (n1 (bold (markup-body n)))
+		     (n2 (if (and (engine-custom e 'error-color) cc)
+			     (color :fg cc (it n1))
+			     (it n1))))
+		 (skribe-eval n2 e))))
+
+;;;; ======================================================================
+;;;;    &source-define ...
+;;;; ======================================================================
+(markup-writer '&source-define
+   :action (lambda (n e)
+	      (let* ((cc (engine-custom e 'source-define-color))
+		     (n1 (bold (markup-body n)))
+		     (n2 (if (and (engine-custom e 'source-color) cc)
+			     (color :fg cc n1)
+			     n1)))
+		 (skribe-eval n2 e))))
+
+;;;; ======================================================================
+;;;;    &source-module ...
+;;;; ======================================================================
+(markup-writer '&source-module
+   :action (lambda (n e)
+	      (let* ((cc (engine-custom e 'source-module-color))
+		     (n1 (bold (markup-body n)))
+		     (n2 (if (and (engine-custom e 'source-color) cc)
+			     (color :fg cc n1)
+			     n1)))
+		 (skribe-eval n2 e))))
+
+;;;; ======================================================================
+;;;;    &source-markup ...
+;;;; ======================================================================
+(markup-writer '&source-markup
+   :action (lambda (n e)
+	      (let* ((cc (engine-custom e 'source-markup-color))
+		     (n1 (bold (markup-body n)))
+		     (n2 (if (and (engine-custom e 'source-color) cc)
+			     (color :fg cc n1)
+			     n1)))
+		 (skribe-eval n2 e))))
+
+;;;; ======================================================================
+;;;;    &source-thread ...
+;;;; ======================================================================
+(markup-writer '&source-thread
+   :action (lambda (n e)
+	      (let* ((cc (engine-custom e 'source-thread-color))
+		     (n1 (bold (markup-body n)))
+		     (n2 (if (and (engine-custom e 'source-color) cc)
+			     (color :fg cc n1)
+			     n1)))
+		 (skribe-eval n2 e))))
+
+;;;; ======================================================================
+;;;;    &source-string ...
+;;;; ======================================================================
+(markup-writer '&source-string
+   :action (lambda (n e)
+	      (let* ((cc (engine-custom e 'source-string-color))
+		     (n1 (markup-body n))
+		     (n2 (if (and (engine-custom e 'source-color) cc)
+			     (color :fg cc n1)
+			     n1)))
+		 (skribe-eval n2 e))))
+
+;;;; ======================================================================
+;;;;    &source-bracket ...
+;;;; ======================================================================
+(markup-writer '&source-bracket
+   :action (lambda (n e)
+	      (let* ((cc (engine-custom e 'source-bracket-color))
+		     (n1 (markup-body n))
+		     (n2 (if (and (engine-custom e 'source-color) cc)
+			     (color :fg cc (bold n1))
+			     (it n1))))
+		 (skribe-eval n2 e))))
+
+;;;; ======================================================================
+;;;;    &source-type ...
+;;;; ======================================================================
+(markup-writer '&source-type
+   :action (lambda (n e)
+	      (let* ((cc (engine-custom e 'source-type-color))
+		     (n1 (markup-body n))
+		     (n2 (if (and (engine-custom e 'source-color) cc)
+			     (color :fg cc n1)
+			     (it n1))))
+		 (skribe-eval n2 e))))
+
+;;;; ======================================================================
+;;;;    &source-key ...
+;;;; ======================================================================
+(markup-writer '&source-key
+   :action (lambda (n e)
+	      (let* ((cc (engine-custom e 'source-type-color))
+		     (n1 (markup-body n))
+		     (n2 (if (and (engine-custom e 'source-color) cc)
+			     (color :fg cc (bold n1))
+			     (it n1))))
+		 (skribe-eval n2 e))))
+
+;;;; ======================================================================
+;;;;    &source-type ...
+;;;; ======================================================================
+(markup-writer '&source-type
+   :action (lambda (n e)
+	      (let* ((cc (engine-custom e 'source-type-color))
+		     (n1 (markup-body n))
+		     (n2 (if (and (engine-custom e 'source-color) cc)
+			     (color :fg "red" (bold n1))
+			     (bold n1))))
+		 (skribe-eval n2 e))))
+
+
+
+;;;; ======================================================================
+;;;;	Context Only Markups
+;;;; ======================================================================
+
+;;;
+;;; Margin -- put text in the margin
+;;;
+(define-markup (margin #!rest opts #!key (ident #f) (class "margin")
+			(side 'right) text)
+  (new markup
+       (markup 'margin)
+       (ident (or ident (symbol->string (gensym 'ident))))
+       (class class)
+       (required-options '(:text))
+       (options (the-options opts :ident :class))
+       (body (the-body opts))))
+
+(markup-writer 'margin
+   :options '(:text)
+   :before (lambda (n e)
+	     (display
+	      "\\setupinmargin[align=right,style=\\tfx\\setupinterlinespace]\n")
+	     (display "\\inright{")
+	     (output (markup-option n :text) e)
+	     (display "}{"))
+   :after  "}")
+
+;;;
+;;; ConTeXt and TeX
+;;;
+(define-markup (ConTeXt #!key (space #t))
+  (if (engine-format? "context")
+      (! (if space "\\CONTEXT\\ " "\\CONTEXT"))
+      "ConTeXt"))
+
+(define-markup (TeX #!key (space #t))
+  (if (engine-format? "context")
+      (! (if space "\\TEX\\ " "\\TEX"))
+      "ConTeXt"))
+
+;;;; ======================================================================
+;;;;    Restore the base engine
+;;;; ======================================================================
+(default-engine-set! (find-engine 'base))
diff --git a/src/guile/skribilo/engine/html.scm b/src/guile/skribilo/engine/html.scm
new file mode 100644
index 0000000..a20ea68
--- /dev/null
+++ b/src/guile/skribilo/engine/html.scm
@@ -0,0 +1,2282 @@
+;*=====================================================================*/
+;*    serrano/prgm/project/skribe/skr/html.skr                         */
+;*    -------------------------------------------------------------    */
+;*    Author      :  Manuel Serrano                                    */
+;*    Creation    :  Sat Jul 26 12:28:57 2003                          */
+;*    Last change :  Thu Jun  2 10:57:42 2005 (serrano)                */
+;*    Copyright   :  2003-05 Manuel Serrano                            */
+;*    -------------------------------------------------------------    */
+;*    HTML Skribe engine                                               */
+;*    -------------------------------------------------------------    */
+;*    Implementation:                                                  */
+;*       common: @path ../src/common/api.src@                          */
+;*       bigloo: @path ../src/bigloo/api.bgl@                          */
+;*    -------------------------------------------------------------    */
+;*    doc:                                                             */
+;*       @ref ../../doc/user/htmle.skb:ref@                            */
+;*=====================================================================*/
+
+(define-skribe-module (skribilo engine html))
+
+
+;; Keep a reference to the base engine.
+(define base-engine (find-engine 'base))
+
+;*---------------------------------------------------------------------*/
+;*    html-file-default ...                                            */
+;*---------------------------------------------------------------------*/
+(define html-file-default
+   ;; Default implementation of the `file-name-proc' custom.
+   (let ((table '())
+	 (filename (tmpnam)))
+      (define (get-file-name base suf)
+	(let* ((c (assoc base table))
+	       (n (if (pair? c)
+		      (let ((n (+ 1 (cdr c))))
+			 (set-cdr! c n)
+			 n)
+		      (begin
+			 (set! table (cons (cons base 1) table))
+			 1))))
+	   (format "~a-~a.~a" base n suf)))
+      (lambda (node e)
+	(let ((f (markup-option node filename))
+	      (file (markup-option node :file)))
+	   (cond
+	      ((string? f)
+	       f)
+	      ((string? file)
+	       file)
+	      ((or file
+		   (and (is-markup? node 'chapter)
+			(engine-custom e 'chapter-file))
+		   (and (is-markup? node 'section)
+			(engine-custom e 'section-file))
+		   (and (is-markup? node 'subsection)
+			(engine-custom e 'subsection-file))
+		   (and (is-markup? node 'subsubsection)
+			(engine-custom e 'subsubsection-file)))
+	       (let* ((b (or (and (string? *skribe-dest*)
+				  (prefix *skribe-dest*))
+			     ""))
+		      (s (or (and (string? *skribe-dest*)
+				  (suffix *skribe-dest*))
+			     "html"))
+		      (nm (get-file-name b s)))
+		  (markup-option-add! node filename nm)
+		  nm))
+	      ((document? node)
+	       *skribe-dest*)
+	      (else
+	       (let ((p (ast-parent node)))
+		  (if (container? p)
+		      (let ((file (html-file p e)))
+			 (if (string? file)
+			     (begin
+				(markup-option-add! node filename file)
+				file)
+			     #f))
+		      #f))))))))
+
+;*---------------------------------------------------------------------*/
+;*    html-engine ...                                                  */
+;*---------------------------------------------------------------------*/
+(define html-engine
+   ;; setup the html engine
+   (default-engine-set!
+      (make-engine 'html
+	 :version 1.0
+	 :format "html"
+	 :delegate (find-engine 'base)
+	 :filter (make-string-replace '((#\< "&lt;")
+					(#\> "&gt;")
+					(#\& "&amp;")
+					(#\" "&quot;")
+					(#\@ "&#x40;")))
+	 :custom `(;; the icon associated with the URL
+		   (favicon #f)
+		   ;; charset used
+		   (charset "ISO-8859-1")
+		   ;; enable/disable Javascript
+		   (javascript #f)
+		   ;; user html head
+		   (head #f)
+		   ;; user CSS
+		   (css ())
+		   ;; user inlined CSS
+		   (inline-css ())
+		   ;; user JS
+		   (js ())
+		   ;; emit-sui
+		   (emit-sui #f)
+		   ;; the body
+		   (background "#ffffff")
+		   (foreground #f)
+		   ;; the margins
+		   (margin-padding 3)
+		   (left-margin #f)
+		   (chapter-left-margin #f)
+		   (section-left-margin #f)
+		   (left-margin-font #f)
+		   (left-margin-size 17.)
+		   (left-margin-background "#dedeff")
+		   (left-margin-foreground #f)
+		   (right-margin #f)
+		   (chapter-right-margin #f)
+		   (section-right-margin #f)
+		   (right-margin-font #f)
+		   (right-margin-size 17.)
+		   (right-margin-background "#dedeff")
+		   (right-margin-foreground #f)
+		   ;; author configuration
+		   (author-font #f)
+		   ;; title configuration
+		   (title-font #f)
+		   (title-background "#8381de")
+		   (title-foreground #f)
+		   (file-title-separator " -- ")
+		   ;; html file naming
+		   (file-name-proc ,html-file-default)
+		   ;; index configuration
+		   (index-header-font-size +2.)
+		   ;; chapter configuration
+		   (chapter-number->string number->string)
+		   (chapter-file #f)
+		   ;; section configuration
+		   (section-title-start "<h3>")
+		   (section-title-stop "</h3>")
+		   (section-title-background "#dedeff")
+		   (section-title-foreground "black")
+		   (section-title-number-separator " ")
+		   (section-number->string number->string)
+		   (section-file #f)
+		   ;; subsection configuration
+		   (subsection-title-start "<h3>")
+		   (subsection-title-stop "</h3>")
+		   (subsection-title-background "#ffffff")
+		   (subsection-title-foreground "#8381de")
+		   (subsection-title-number-separator " ")
+		   (subsection-number->string number->string)
+		   (subsection-file #f)
+		   ;; subsubsection configuration
+		   (subsubsection-title-start "<h4>")
+		   (subsubsection-title-stop "</h4>")
+		   (subsubsection-title-background #f)
+		   (subsubsection-title-foreground "#8381de")
+		   (subsubsection-title-number-separator " ")
+		   (subsubsection-number->string number->string)
+		   (subsubsection-file #f)
+		   ;; source fontification
+		   (source-color #t)
+		   (source-comment-color "#ffa600")
+		   (source-error-color "red")
+		   (source-define-color "#6959cf")
+		   (source-module-color "#1919af")
+		   (source-markup-color "#1919af")
+		   (source-thread-color "#ad4386")
+		   (source-string-color "red")
+		   (source-bracket-color "red")
+		   (source-type-color "#00cf00")
+		   ;; image
+		   (image-format ("png" "gif" "jpg" "jpeg")))
+	 :symbol-table '(("iexcl" "&#161;")
+			 ("cent" "&#162;")
+			 ("pound" "&#163;")
+			 ("currency" "&#164;")
+			 ("yen" "&#165;")
+			 ("section" "&#167;")
+			 ("mul" "&#168;")
+			 ("copyright" "&#169;")
+			 ("female" "&#170;")
+			 ("lguillemet" "&#171;")
+			 ("not" "&#172;")
+			 ("registered" "&#174;")
+			 ("degree" "&#176;")
+			 ("plusminus" "&#177;")
+			 ("micro" "&#181;")
+			 ("paragraph" "&#182;")
+			 ("middot" "&#183;")
+			 ("male" "&#184;")
+			 ("rguillemet" "&#187;")
+			 ("1/4" "&#188;")
+			 ("1/2" "&#189;")
+			 ("3/4" "&#190;")
+			 ("iquestion" "&#191;")
+			 ("Agrave" "&#192;")
+			 ("Aacute" "&#193;")
+			 ("Acircumflex" "&#194;")
+			 ("Atilde" "&#195;")
+			 ("Amul" "&#196;")
+			 ("Aring" "&#197;")
+			 ("AEligature" "&#198;")
+			 ("Oeligature" "&#338;")
+			 ("Ccedilla" "&#199;")
+			 ("Egrave" "&#200;")
+			 ("Eacute" "&#201;")
+			 ("Ecircumflex" "&#202;")
+			 ("Euml" "&#203;")
+			 ("Igrave" "&#204;")
+			 ("Iacute" "&#205;")
+			 ("Icircumflex" "&#206;")
+			 ("Iuml" "&#207;")
+			 ("ETH" "&#208;")
+			 ("Ntilde" "&#209;")
+			 ("Ograve" "&#210;")
+			 ("Oacute" "&#211;")
+			 ("Ocurcumflex" "&#212;")
+			 ("Otilde" "&#213;")
+			 ("Ouml" "&#214;")
+			 ("times" "&#215;")
+			 ("Oslash" "&#216;")
+			 ("Ugrave" "&#217;")
+			 ("Uacute" "&#218;")
+			 ("Ucircumflex" "&#219;")
+			 ("Uuml" "&#220;")
+			 ("Yacute" "&#221;")
+			 ("THORN" "&#222;")
+			 ("szlig" "&#223;")
+			 ("agrave" "&#224;")
+			 ("aacute" "&#225;")
+			 ("acircumflex" "&#226;")
+			 ("atilde" "&#227;")
+			 ("amul" "&#228;")
+			 ("aring" "&#229;")
+			 ("aeligature" "&#230;")
+			 ("oeligature" "&#339;")
+			 ("ccedilla" "&#231;")
+			 ("egrave" "&#232;")
+			 ("eacute" "&#233;")
+			 ("ecircumflex" "&#234;")
+			 ("euml" "&#235;")
+			 ("igrave" "&#236;")
+			 ("iacute" "&#237;")
+			 ("icircumflex" "&#238;")
+			 ("iuml" "&#239;")
+			 ("eth" "&#240;")
+			 ("ntilde" "&#241;")
+			 ("ograve" "&#242;")
+			 ("oacute" "&#243;")
+			 ("ocurcumflex" "&#244;")
+			 ("otilde" "&#245;")
+			 ("ouml" "&#246;")
+			 ("divide" "&#247;")
+			 ("oslash" "&#248;")
+			 ("ugrave" "&#249;")
+			 ("uacute" "&#250;")
+			 ("ucircumflex" "&#251;")
+			 ("uuml" "&#252;")
+			 ("yacute" "&#253;")
+			 ("thorn" "&#254;")
+			 ("ymul" "&#255;")
+			 ;; Greek
+			 ("Alpha" "&#913;")
+			 ("Beta" "&#914;")
+			 ("Gamma" "&#915;")
+			 ("Delta" "&#916;")
+			 ("Epsilon" "&#917;")
+			 ("Zeta" "&#918;")
+			 ("Eta" "&#919;")
+			 ("Theta" "&#920;")
+			 ("Iota" "&#921;")
+			 ("Kappa" "&#922;")
+			 ("Lambda" "&#923;")
+			 ("Mu" "&#924;")
+			 ("Nu" "&#925;")
+			 ("Xi" "&#926;")
+			 ("Omicron" "&#927;")
+			 ("Pi" "&#928;")
+			 ("Rho" "&#929;")
+			 ("Sigma" "&#931;")
+			 ("Tau" "&#932;")
+			 ("Upsilon" "&#933;")
+			 ("Phi" "&#934;")
+			 ("Chi" "&#935;")
+			 ("Psi" "&#936;")
+			 ("Omega" "&#937;")
+			 ("alpha" "&#945;")
+			 ("beta" "&#946;")
+			 ("gamma" "&#947;")
+			 ("delta" "&#948;")
+			 ("epsilon" "&#949;")
+			 ("zeta" "&#950;")
+			 ("eta" "&#951;")
+			 ("theta" "&#952;")
+			 ("iota" "&#953;")
+			 ("kappa" "&#954;")
+			 ("lambda" "&#955;")
+			 ("mu" "&#956;")
+			 ("nu" "&#957;")
+			 ("xi" "&#958;")
+			 ("omicron" "&#959;")
+			 ("pi" "&#960;")
+			 ("rho" "&#961;")
+			 ("sigmaf" "&#962;")
+			 ("sigma" "&#963;")
+			 ("tau" "&#964;")
+			 ("upsilon" "&#965;")
+			 ("phi" "&#966;")
+			 ("chi" "&#967;")
+			 ("psi" "&#968;")
+			 ("omega" "&#969;")
+			 ("thetasym" "&#977;")
+			 ("piv" "&#982;")
+			 ;; punctuation
+			 ("bullet" "&#8226;")
+			 ("ellipsis" "&#8230;")
+			 ("weierp" "&#8472;")
+			 ("image" "&#8465;")
+			 ("real" "&#8476;")
+			 ("tm" "&#8482;")
+			 ("alef" "&#8501;")
+			 ("<-" "&#8592;")
+			 ("<--" "&#8592;")
+			 ("uparrow" "&#8593;")
+			 ("->" "&#8594;")
+			 ("-->" "&#8594;")
+			 ("downarrow" "&#8595;")
+			 ("<->" "&#8596;")
+			 ("<-->" "&#8596;")
+			 ("<+" "&#8629;")
+			 ("<=" "&#8656;")
+			 ("<==" "&#8656;")
+			 ("Uparrow" "&#8657;")
+			 ("=>" "&#8658;")
+			 ("==>" "&#8658;")
+			 ("Downarrow" "&#8659;")
+			 ("<=>" "&#8660;")
+			 ("<==>" "&#8660;")
+			 ;; Mathematical operators
+			 ("forall" "&#8704;")
+			 ("partial" "&#8706;")
+			 ("exists" "&#8707;")
+			 ("emptyset" "&#8709;")
+			 ("infinity" "&#8734;")
+			 ("nabla" "&#8711;")
+			 ("in" "&#8712;")
+			 ("notin" "&#8713;")
+			 ("ni" "&#8715;")
+			 ("prod" "&#8719;")
+			 ("sum" "&#8721;")
+			 ("asterisk" "&#8727;")
+			 ("sqrt" "&#8730;")
+			 ("propto" "&#8733;")
+			 ("angle" "&#8736;")
+			 ("and" "&#8743;")
+			 ("or" "&#8744;")
+			 ("cap" "&#8745;")
+			 ("cup" "&#8746;")
+			 ("integral" "&#8747;")
+			 ("therefore" "&#8756;")
+			 ("models" "|=")
+			 ("vdash" "|-")
+			 ("dashv" "-|")
+			 ("sim" "&#8764;")
+			 ("cong" "&#8773;")
+			 ("approx" "&#8776;")
+			 ("neq" "&#8800;")
+			 ("equiv" "&#8801;")
+			 ("le" "&#8804;")
+			 ("ge" "&#8805;")
+			 ("subset" "&#8834;")
+			 ("supset" "&#8835;")
+			 ("nsupset" "&#8835;")
+			 ("subseteq" "&#8838;")
+			 ("supseteq" "&#8839;")
+			 ("oplus" "&#8853;")
+			 ("otimes" "&#8855;")
+			 ("perp" "&#8869;")
+			 ("mid" "|")
+			 ("lceil" "&#8968;")
+			 ("rceil" "&#8969;")
+			 ("lfloor" "&#8970;")
+			 ("rfloor" "&#8971;")
+			 ("langle" "&#9001;")
+			 ("rangle" "&#9002;")
+			 ;; Misc
+			 ("loz" "&#9674;")
+			 ("spades" "&#9824;")
+			 ("clubs" "&#9827;")
+			 ("hearts" "&#9829;")
+			 ("diams" "&#9830;")
+			 ("euro" "&#8464;")
+			 ;; LaTeX
+			 ("dag" "dag")
+			 ("ddag" "ddag")
+			 ("circ" "o")
+			 ("top" "T")
+			 ("bottom" "&#8869;")
+			 ("lhd" "<")
+			 ("rhd" ">")
+			 ("parallel" "||")))))
+
+;*---------------------------------------------------------------------*/
+;*    html-file ...                                                    */
+;*---------------------------------------------------------------------*/
+(define (html-file n e)
+  (let ((proc (or (engine-custom e 'file-name-proc) html-file-default)))
+    (proc n e)))
+
+;*---------------------------------------------------------------------*/
+;*    html-title-engine ...                                            */
+;*---------------------------------------------------------------------*/
+(define html-title-engine
+   (copy-engine 'html-title base-engine
+      :filter (make-string-replace '((#\< "&lt;")
+				     (#\> "&gt;")
+				     (#\& "&amp;")
+				     (#\" "&quot;")))))
+
+;*---------------------------------------------------------------------*/
+;*    html-browser-title ...                                           */
+;*---------------------------------------------------------------------*/
+(define (html-browser-title n)
+   (and (markup? n)
+	(or (markup-option n :html-title)
+	    (if (document? n)
+		(markup-option n :title)
+		(html-browser-title (ast-parent n))))))
+
+
+;*---------------------------------------------------------------------*/
+;*    html-container-number ...                                        */
+;*    -------------------------------------------------------------    */
+;*    Returns a string representing the container number               */
+;*---------------------------------------------------------------------*/
+(define (html-container-number c e)
+   (define (html-number n proc)
+      (cond
+	 ((string? n)
+	  n)
+	 ((number? n)
+	  (if (procedure? proc)
+	      (proc n)
+	      (number->string n)))
+	 (else
+	  "")))
+   (define (html-chapter-number c)
+      (html-number (markup-option c :number)
+		   (engine-custom e 'chapter-number->string)))
+   (define (html-section-number c)
+      (let ((p (ast-parent c))
+	    (s (html-number (markup-option c :number)
+			    (engine-custom e 'section-number->string))))
+	 (cond
+	    ((is-markup? p 'chapter)
+	     (string-append (html-chapter-number p) "." s))
+	    (else
+	     (string-append s)))))
+   (define (html-subsection-number c)
+      (let ((p (ast-parent c))
+	    (s (html-number (markup-option c :number)
+			    (engine-custom e 'subsection-number->string))))
+	 (cond
+	    ((is-markup? p 'section)
+	     (string-append (html-section-number p) "." s))
+	    (else
+	     (string-append "." s)))))
+   (define (html-subsubsection-number c)
+      (let ((p (ast-parent c))
+	    (s (html-number (markup-option c :number)
+			    (engine-custom e 'subsubsection-number->string))))
+	 (cond
+	    ((is-markup? p 'subsection)
+	     (string-append (html-subsection-number p) "." s))
+	    (else
+	     (string-append ".." s)))))
+   (define (inner-html-container-number c)
+      (html-number (markup-option c :number) #f))
+   (let ((n (markup-option c :number)))
+      (if (not n)
+	  ""
+	  (case (markup-markup c)
+	     ((chapter)
+	      (html-chapter-number c))
+	     ((section)
+	      (html-section-number c))
+	     ((subsection)
+	      (html-subsection-number c))
+	     ((subsubsection)
+	      (html-subsubsection-number c))
+	     (else
+	      (if (container? c)
+		  (inner-html-container-number c)
+		  (skribe-error 'html-container-number
+				"Not a container"
+				(markup-markup c))))))))
+
+;*---------------------------------------------------------------------*/
+;*    html-counter ...                                                 */
+;*---------------------------------------------------------------------*/
+(define (html-counter cnts)
+   (cond
+      ((not cnts)
+       "")
+      ((null? cnts)
+       "")
+      ((not (pair? cnts))
+       cnts)
+      ((null? (cdr cnts))
+       (format "~a." (car cnts)))
+      (else
+       (let loop ((cnts cnts))
+	  (if (null? (cdr cnts))
+	      (format "~a" (car cnts))
+	      (format "~a.~a" (car cnts) (loop (cdr cnts))))))))
+
+;*---------------------------------------------------------------------*/
+;*    html-width ...                                                   */
+;*---------------------------------------------------------------------*/
+(define (html-width width)
+   (cond
+      ((and (integer? width) (exact? width))
+       (format "~A" width))
+      ((real? width)
+       (format "~A%" (inexact->exact (round width))))
+      ((string? width)
+       width)
+      (else
+       (skribe-error 'html-width "bad width" width))))
+
+;*---------------------------------------------------------------------*/
+;*    html-class ...                                                   */
+;*---------------------------------------------------------------------*/
+(define (html-class m)
+   (if (markup? m)
+       (let ((c (markup-class m)))
+	  (if (or (string? c) (symbol? c) (number? c))
+	      (printf " class=\"~a\"" c)))))
+
+;*---------------------------------------------------------------------*/
+;*    html-markup-class ...                                            */
+;*---------------------------------------------------------------------*/
+(define (html-markup-class m)
+   (lambda (n e)
+      (printf "<~a" m)
+      (html-class n)
+      (display ">")))
+
+;*---------------------------------------------------------------------*/
+;*    html-color-spec? ...                                             */
+;*---------------------------------------------------------------------*/
+(define (html-color-spec? v)
+   (and v
+	(not (unspecified? v))
+	(or (not (string? v)) (> (string-length v) 0))))
+
+;*---------------------------------------------------------------------*/
+;*    document ...                                                     */
+;*---------------------------------------------------------------------*/
+(markup-writer 'document
+   :options '(:title :author :ending :html-title :env)
+   :action (lambda (n e)
+	      (let* ((id (markup-ident n))
+		     (title (new markup
+			       (markup '&html-document-title)
+			       (parent n)
+			       (ident (string-append id "-title"))
+			       (class (markup-class n))
+			       (options `((author ,(markup-option n :author))))
+			       (body (markup-option n :title)))))
+		 (&html-generic-document n title e)))
+   :after (lambda (n e)
+	     (if (engine-custom e 'emit-sui)
+		 (document-sui n e))))
+
+;*---------------------------------------------------------------------*/
+;*    &html-html ...                                                   */
+;*---------------------------------------------------------------------*/
+(markup-writer '&html-html
+   :before "<!-- 95% W3C COMPLIANT, 95% CSS FREE, RAW HTML -->
+<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">
+<html>\n"
+   :after "</html>")
+
+;*---------------------------------------------------------------------*/
+;*    &html-head ...                                                   */
+;*---------------------------------------------------------------------*/
+(markup-writer '&html-head
+   :before (lambda (n e)
+	     (printf "<head>\n")
+	     (printf "<meta http-equiv=\"Content-Type\" content=\"text/html;")
+	     (printf "charset=~A\">\n" (engine-custom (find-engine 'html)
+						      'charset)))
+   :after "</head>\n\n")
+
+;*---------------------------------------------------------------------*/
+;*    &html-body ...                                                   */
+;*---------------------------------------------------------------------*/
+(markup-writer '&html-body
+   :before (lambda (n e)
+	      (let ((bg (engine-custom e 'background)))
+		 (display "<body")
+		 (html-class n)
+		 (when (html-color-spec? bg) (printf " bgcolor=\"~a\"" bg))
+		 (display ">\n")))
+   :after "</body>\n")
+
+;*---------------------------------------------------------------------*/
+;*    &html-page ...                                                   */
+;*---------------------------------------------------------------------*/
+(markup-writer '&html-page
+   :action (lambda (n e)
+	      (define (html-margin m fn size bg fg cla)
+		 (printf "<td align=\"left\" valign=\"top\" class=\"~a\"" cla)
+		 (if size
+		     (printf " width=\"~a\"" (html-width size)))
+		 (if (html-color-spec? bg)
+		     (printf " bgcolor=\"~a\">" bg)
+		     (display ">"))
+		 (printf "<div class=\"~a\">\n" cla)
+		 (cond
+		    ((and (string? fg) (string? fn))
+		     (printf "<font color=\"~a\" \"~a\">" fg fn))
+		    ((string? fg)
+		     (printf "<font color=\"~a\">" fg))
+		    ((string? fn)
+		     (printf "<font \"~a\">" fn)))
+		 (if (procedure? m)
+		     (skribe-eval (m n e) e)
+		     (output m e))
+		 (if (or (string? fg) (string? fn))
+		     (display "</font>"))
+		 (display "</div></td>\n"))
+	      (let ((body (markup-body n))
+		    (lm (engine-custom e 'left-margin))
+		    (lmfn (engine-custom e 'left-margin-font))
+		    (lms (engine-custom e 'left-margin-size))
+		    (lmbg (engine-custom e 'left-margin-background))
+		    (lmfg (engine-custom e 'left-margin-foreground))
+		    (rm (engine-custom e 'right-margin))
+		    (rmfn (engine-custom e 'right-margin-font))
+		    (rms (engine-custom e 'right-margin-size))
+		    (rmbg (engine-custom e 'right-margin-background))
+		    (rmfg (engine-custom e 'right-margin-foreground)))
+		 (cond
+		    ((and lm rm)
+		     (let* ((ep (engine-custom e 'margin-padding))
+			    (ac (if (number? ep) ep 0)))
+			(printf "<table cellpadding=\"~a\" cellspacing=\"0\" width=\"100%\" class=\"skribe-margins\"><tr>\n" ac))
+		     (html-margin lm lmfn lms lmbg lmfg "skribe-left-margin")
+		     (html-margin body #f #f #f #f "skribe-body")
+		     (html-margin rm rmfn rms rmbg rmfg "skribe-right-margin")
+		     (display "</tr></table>"))
+		    (lm
+		     (let* ((ep (engine-custom e 'margin-padding))
+			    (ac (if (number? ep) ep 0)))
+			(printf "<table cellpadding=\"~a\" cellspacing=\"0\" width=\"100%\" class=\"skribe-margins\"><tr>\n" ac))
+		     (html-margin lm lmfn lms lmbg lmfg "skribe-left-margin")
+		     (html-margin body #f #f #f #f "skribe-body")
+		     (display "</tr></table>"))
+		    (rm
+		     (let* ((ep (engine-custom e 'margin-padding))
+			    (ac (if (number? ep) ep 0)))
+			(printf "<table cellpadding=\"~a\" cellspacing=\"0\" width=\"100%\" class=\"skribe-margins\"><tr>\n"))
+		     (html-margin body #f #f #f #f "skribe-body")
+		     (html-margin rm rmfn rms rmbg rmfg "skribe-right-margin")
+		     (display "</tr></table>"))
+		    (else
+		     (display "<div class=\"skribe-body\">\n")
+		     (output body e)
+		     (display "</div>\n"))))))
+
+;*---------------------------------------------------------------------*/
+;*    &html-generic-header ...                                         */
+;*---------------------------------------------------------------------*/
+(define (&html-generic-header n e)
+   (let* ((ic (engine-custom e 'favicon))
+	  (id (markup-ident n)))
+      (unless (string? id)
+	 (skribe-error '&html-generic-header
+		       (format "Illegal identifier `~a'" id)
+		       n))
+      ;; title
+      (output (new markup
+		 (markup '&html-header-title)
+		 (parent n)
+		 (ident (string-append id "-title"))
+		 (class (markup-class n))
+		 (body (markup-body n)))
+	      e)
+      ;; favicon
+      (output (new markup
+		 (markup '&html-header-favicon)
+		 (parent n)
+		 (ident (string-append id "-favicon"))
+		 (body (cond
+			  ((string? ic)
+			   ic)
+			  ((procedure? ic)
+			   (ic d e)))))
+	      e)
+      ;; style
+      (output (new markup
+		 (markup '&html-header-style)
+		 (parent n)
+		 (ident (string-append id "-style"))
+		 (class (markup-class n)))
+	      e)
+      ;; css
+      (output (new markup
+		 (markup '&html-header-css)
+		 (parent n)
+		 (ident (string-append id "-css"))
+		 (body (let ((c (engine-custom e 'css)))
+			  (if (string? c)
+			      (list c)
+			      c))))
+	      e)
+      ;; javascript
+      (output (new markup
+		 (markup '&html-header-javascript)
+		 (parent n)
+		 (ident (string-append id "-javascript")))
+	      e)))
+
+(markup-writer '&html-header-title
+   :before "<title>"
+   :action (lambda (n e)
+	      (output (markup-body n) html-title-engine))
+   :after "</title>\n")
+
+(markup-writer '&html-header-favicon
+   :action (lambda (n e)
+	      (let ((i (markup-body n)))
+		 (when i
+		    (printf " <link rel=\"shortcut icon\" href=~s>\n" i)))))
+
+(markup-writer '&html-header-css
+   :action (lambda (n e)
+	      (let ((css (markup-body n)))
+		 (when (pair? css)
+		    (for-each (lambda (css)
+				 (printf " <link href=~s rel=\"stylesheet\" type=\"text/css\">\n" css))
+			      css)))))
+
+(markup-writer '&html-header-style
+   :before " <style type=\"text/css\">\n  <!--\n"
+   :action (lambda (n e)
+	      (let ((hd (engine-custom e 'head))
+		    (icss (let ((ic (engine-custom e 'inline-css)))
+			     (if (string? ic)
+				 (list ic)
+				 ic))))
+		 (display "  pre { font-family: monospace }\n")
+		 (display "  tt { font-family: monospace }\n")
+		 (display "  code { font-family: monospace }\n")
+		 (display "  p.flushright { text-align: right }\n")
+		 (display "  p.flushleft { text-align: left }\n")
+		 (display "  span.sc { font-variant: small-caps }\n")
+		 (display "  span.sf { font-family: sans-serif }\n")
+		 (display "  span.skribetitle { font-family: sans-serif; font-weight: bolder; font-size: x-large; }\n")
+		 (when hd (display (format "  ~a\n" hd)))
+		 (when (pair? icss)
+		    (for-each (lambda (css)
+				 (let ((p (open-input-file css)))
+				    (if (not (input-port? p))
+					(skribe-error
+					 'html-css
+					 "Can't open CSS file for input"
+					 css)
+					(begin
+					   (let loop ((l (read-line p)))
+					      (unless (eof-object? l)
+						 (display l)
+						 (newline)
+						 (loop (read-line p))))
+					   (close-input-port p)))))
+			      icss))))
+   :after "  -->\n </style>\n")
+
+(markup-writer '&html-header-javascript
+   :action (lambda (n e)
+	      (when (engine-custom e 'javascript)
+		 (display " <script language=\"JavaScript\" type=\"text/javascript\">\n")
+		 (display " <!--\n")
+		 (display "  function skribenospam( n, d, f ) {\n")
+		 (display "    nn=n.replace( / /g , \".\" );\n" )
+		 (display "    dd=d.replace( / /g , \".\" );\n" )
+		 (display "    document.write( \"<a href=\\\"mailto:\" + nn + \"@\" + dd + \"\\\">\" );\n")
+		 (display "    if( f ) {\n")
+		 (display "      document.write( \"<tt>\" + nn + \"@\" + dd + \"</\" + \"tt><\" + \"/a>\" );\n")
+		 (display "    }\n")
+		 (display "  }\n")
+		 (display " -->\n")
+		 (display " </script>\n"))
+	      (let* ((ejs (engine-custom e 'js))
+		     (js (cond
+			    ((string? ejs)
+			     (list ejs))
+			    ((list? ejs)
+			     ejs)
+			    (else
+			     '()))))
+		 (for-each (lambda (s)
+			      (printf "<script type=\"text/javascript\" src=\"~a\"></script>" s))
+			   js))))
+
+
+;*---------------------------------------------------------------------*/
+;*    &html-header ...                                                 */
+;*---------------------------------------------------------------------*/
+(markup-writer '&html-document-header :action &html-generic-header)
+(markup-writer '&html-chapter-header :action &html-generic-header)
+(markup-writer '&html-section-header :action &html-generic-header)
+(markup-writer '&html-subsection-header :action &html-generic-header)
+(markup-writer '&html-subsubsection-header :action &html-generic-header)
+
+;*---------------------------------------------------------------------*/
+;*    &html-ending ...                                                 */
+;*---------------------------------------------------------------------*/
+(markup-writer '&html-ending
+   :before "<div class=\"skribe-ending\">"
+   :action (lambda (n e)
+	      (let ((body (markup-body n)))
+		 (if body
+		     (output body #t)
+		     (skribe-eval
+		      (list (hrule)
+			    (p :class "ending"
+			       (font :size -1
+				     (list "This HTML page was "
+					   "produced by "
+					   (ref :text "Skribilo"
+						:url (skribilo-url))
+					   "."
+					   (linebreak)
+					   "Last update: " (date)))))
+		      e))))
+   :after "</div>\n")
+
+;*---------------------------------------------------------------------*/
+;*    &html-generic-title ...                                          */
+;*---------------------------------------------------------------------*/
+(define (&html-generic-title n e)
+   (let* ((title (markup-body n))
+	  (authors (markup-option n 'author))
+	  (tbg (engine-custom e 'title-background))
+	  (tfg (engine-custom e 'title-foreground))
+	  (tfont (engine-custom e 'title-font)))
+      (when title
+	 (display "<table width=\"100%\" class=\"skribetitle\" cellspacing=\"0\" cellpadding=\"0\"><tbody>\n<tr>")
+	 (if (html-color-spec? tbg)
+	     (printf "<td align=\"center\" bgcolor=\"~a\">" tbg)
+	     (display "<td align=\"center\">"))
+	 (if (string? tfg)
+	     (printf "<font color=\"~a\">" tfg))
+	 (when title
+	    (if (string? tfont)
+		(begin
+		   (printf "<font ~a><strong>" tfont)
+		   (output title e)
+		   (display "</strong></font>"))
+		(begin
+		   (printf "<div class=\"skribetitle\"><strong><big><big><big>")
+		   (output title e)
+		   (display "</big></big></big></strong></div>"))))
+	 (if (not authors)
+	     (display "\n")
+	     (html-title-authors authors e))
+	 (if (string? tfg)
+	     (display "</font>"))
+	 (display "</td></tr></tbody></table>\n"))))
+
+;*---------------------------------------------------------------------*/
+;*    &html-document-title ...                                         */
+;*---------------------------------------------------------------------*/
+(markup-writer '&html-document-title :action &html-generic-title)
+(markup-writer '&html-chapter-title :action &html-generic-title)
+(markup-writer '&html-section-title :action &html-generic-title)
+(markup-writer '&html-subsection-title :action &html-generic-title)
+(markup-writer '&html-subsubsection-title :action &html-generic-title)
+
+;*---------------------------------------------------------------------*/
+;*    &html-footnotes                                                  */
+;*---------------------------------------------------------------------*/
+(markup-writer '&html-footnotes
+   :before (lambda (n e)
+	      (let ((footnotes (markup-body n)))
+		 (when (pair? footnotes)
+		    (display "<div class=\"footnote\">")
+		    (display "<br><br>\n")
+		    (display "<hr width='20%' size='2' align='left'>\n"))))
+   :action (lambda (n e)
+	      (let ((footnotes (markup-body n)))
+		 (when (pair? footnotes)
+		    (let loop ((fns footnotes))
+		       (if (pair? fns)
+			   (let ((fn (car fns)))
+			      (printf "<a name=\"footnote-~a\">"
+				      (string-canonicalize
+				       (container-ident fn)))
+			      (printf "<sup><small>~a</small></sup></a>: "
+				      (markup-option fn :number))
+			      (output (markup-body fn) e)
+			      (display "\n<br>\n")
+			      (loop (cdr fns)))))
+		    (display "<div>")))))
+
+;*---------------------------------------------------------------------*/
+;*    html-title-authors ...                                           */
+;*---------------------------------------------------------------------*/
+(define (html-title-authors authors e)
+   (define (html-authorsN authors cols first)
+      (define (make-row authors . opt)
+	 (tr (map (lambda (v)
+		     (apply td :align 'center :valign 'top v opt))
+		  authors)))
+      (define (make-rows authors)
+	 (let loop ((authors authors)
+		    (rows '())
+		    (row '())
+		    (cnum 0))
+	    (cond
+	       ((null? authors)
+		(reverse! (cons (make-row (reverse! row)) rows)))
+	       ((= cnum cols)
+		(loop authors
+		      (cons (make-row (reverse! row)) rows)
+		      '()
+		      0))
+	       (else
+		(loop (cdr authors)
+		      rows
+		      (cons (car authors) row)
+		      (+ cnum 1))))))
+      (output (table :cellpadding 10
+		 (if first
+		     (cons (make-row (list (car authors)) :colspan cols)
+			   (make-rows (cdr authors)))
+		     (make-rows authors)))
+	      e))
+   (cond
+      ((pair? authors)
+       (display "<center>\n")
+       (let ((len (length authors)))
+	  (case len
+	     ((1)
+	      (output (car authors) e))
+	     ((2 3)
+	      (html-authorsN authors len #f))
+	     ((4)
+	      (html-authorsN authors 2 #f))
+	     (else
+	      (html-authorsN authors 3 #t))))
+       (display "</center>\n"))
+      (else
+       (html-title-authors (list authors) e))))
+
+;*---------------------------------------------------------------------*/
+;*    document-sui ...                                                 */
+;*---------------------------------------------------------------------*/
+(define (document-sui n e)
+   (define (sui)
+      (display "(sui \"")
+      (skribe-eval (markup-option n :title) html-title-engine)
+      (display "\"\n")
+      (printf "  :file ~s\n" (sui-referenced-file n e))
+      (sui-marks n e)
+      (sui-blocks 'chapter n e)
+      (sui-blocks 'section n e)
+      (sui-blocks 'subsection n e)
+      (sui-blocks 'subsubsection n e)
+      (display "  )\n"))
+   (if (string? *skribe-dest*)
+       (let ((f (format "~a.sui" (prefix *skribe-dest*))))
+	  (with-output-to-file f sui))
+       (sui)))
+
+;*---------------------------------------------------------------------*/
+;*    sui-referenced-file ...                                          */
+;*---------------------------------------------------------------------*/
+(define (sui-referenced-file n e)
+   (let ((file (html-file n e)))
+      (if (member (suffix file) '("skb" "sui" "skr" "html"))
+	  (string-append (strip-ref-base (prefix file)) ".html")
+	  file)))
+
+;*---------------------------------------------------------------------*/
+;*    sui-marks ...                                                    */
+;*---------------------------------------------------------------------*/
+(define (sui-marks n e)
+   (printf "  (marks")
+   (for-each (lambda (m)
+		(printf "\n    (~s" (markup-ident m))
+		(printf " :file ~s" (sui-referenced-file m e))
+		(printf " :mark ~s" (markup-ident m))
+		(when (markup-class m)
+		   (printf " :class ~s" (markup-class m)))
+		(display ")"))
+	     (search-down (lambda (n) (is-markup? n 'mark)) n))
+   (display ")\n"))
+
+;*---------------------------------------------------------------------*/
+;*    sui-blocks ...                                                   */
+;*---------------------------------------------------------------------*/
+(define (sui-blocks kind n e)
+   (printf "  (~as" kind)
+   (for-each (lambda (chap)
+		(display "\n    (\"")
+		(skribe-eval (markup-option chap :title) html-title-engine)
+		(printf "\" :file ~s" (sui-referenced-file chap e))
+		(printf " :mark ~s" (markup-ident chap))
+		(when (markup-class chap)
+		   (printf " :class ~s" (markup-class chap)))
+		(display ")"))
+	     (container-search-down (lambda (n) (is-markup? n kind)) n))
+   (display ")\n"))
+
+;*---------------------------------------------------------------------*/
+;*    author ...                                                       */
+;*---------------------------------------------------------------------*/
+(markup-writer 'author
+   :options '(:name :title :affiliation :email :url :address :phone :photo :align)
+   :before (lambda (n e)
+	      (display "<table")
+	      (html-class n)
+	      (display "><tbody>\n"))
+   :action (lambda (n e)
+	      (let ((name (markup-option n :name))
+		    (title (markup-option n :title))
+		    (affiliation (markup-option n :affiliation))
+		    (email (markup-option n :email))
+		    (url (markup-option n :url))
+		    (address (markup-option n :address))
+		    (phone (markup-option n :phone))
+		    (nfn (engine-custom e 'author-font))
+		    (align (markup-option n :align)))
+		 (define (row n)
+		    (printf "<tr><td align=\"~a\">" align)
+		    (output n e)
+		    (display "</td></tr>"))
+		 ;; name
+		 (printf "<tr><td align=\"~a\">" align)
+		 (if nfn
+		     (printf "<font ~a>\n" nfn)
+		     (display "<font size=\"+2\"><i>\n"))
+		 (output name e)
+		 (if nfn
+		     (printf "</font>\n")
+		     (display "</i></font>\n"))
+		 (display "</td></tr>")
+		 ;; title
+		 (if title (row title))
+		 ;; affiliation
+		 (if affiliation (row affiliation))
+		 ;; address
+		 (if (pair? address)
+		     (for-each row address))
+		 ;; telephone
+		 (if phone (row phone))
+		 ;; email
+		 (if email (row email))
+		 ;; url
+		 (if url (row url))))
+   :after "</tbody></table>")
+
+;*---------------------------------------------------------------------*/
+;*    author ...                                                       */
+;*---------------------------------------------------------------------*/
+(markup-writer 'author
+   :options '(:name :title :affiliation :email :url :address :phone :photo :align)
+   :predicate (lambda (n e) (markup-option n :photo))
+   :before (lambda (n e)
+	      (display "<table")
+	      (html-class n)
+	      (display "><tbody>\n<tr>"))
+   :action (lambda (n e)
+	      (let ((photo (markup-option n :photo)))
+		 (display "<td>")
+		 (output photo e)
+		 (display "</td><td>")
+		 (markup-option-add! n :photo #f)
+		 (output n e)
+		 (markup-option-add! n :photo photo)
+		 (display "</td>")))
+   :after "</tr>\n</tbody></table>")
+
+;*---------------------------------------------------------------------*/
+;*    toc ...                                                          */
+;*---------------------------------------------------------------------*/
+(markup-writer 'toc
+   :options 'all
+   :action (lambda (n e)
+	      (define (col n)
+		 (let loop ((i 0))
+		      (if (< i n)
+			  (begin
+			     (display "<td></td>")
+			     (loop (+ i 1))))))
+	      (define (toc-entry fe level)
+		 (let* ((c (car fe))
+			(ch (cdr fe))
+			(t (markup-option c :title))
+			(id (markup-ident c))
+			(f (html-file c e)))
+		    (unless (string? id)
+		       (skribe-error 'toc
+				     (format "Illegal identifier `~a'" id)
+				     c))
+		    (display " <tr>")
+		    ;; blank columns
+		    (col level)
+		    ;; number
+		    (printf "<td valign=\"top\" align=\"left\">~a</td>"
+			    (html-container-number c e))
+		    ;; title
+		    (printf "<td colspan=\"~a\" width=\"100%\">"
+			    (- 4 level))
+		    (printf "<a href=\"~a#~a\">"
+			    (if (string=? f *skribe-dest*)
+				""
+				(strip-ref-base (or f *skribe-dest* "")))
+			    (string-canonicalize id))
+		    (output (markup-option c :title) e)
+		    (display "</a></td>")
+		    (display "</tr>\n")
+		    ;; the children
+		    (for-each (lambda (n) (toc-entry n (+ 1 level))) ch)))
+	      (define (symbol->keyword s)
+		 (cond-expand
+		    (stklos
+		     (make-keyword s))
+		    (bigloo
+		     (string->keyword (string-append ":" (symbol->string s))))))
+	      (let* ((c (markup-option n :chapter))
+		     (s (markup-option n :section))
+		     (ss (markup-option n :subsection))
+		     (sss (markup-option n :subsubsection))
+		     (b (markup-body n))
+		     (bb (if (handle? b)
+			     (handle-ast b)
+			     b)))
+		 (if (not (container? bb))
+		     (error 'toc
+			    "Illegal body (container expected)"
+			    (if (markup? bb)
+				(markup-markup bb)
+				"???"))
+		     (let ((lst (find-down (lambda (x)
+					     (and (markup? x)
+						  (markup-option x :toc)
+						  (or (and sss (is-markup? x 'subsubsection))
+						      (and ss (is-markup? x 'subsection))
+						      (and s (is-markup? x 'section))
+						      (and c (is-markup? x 'chapter))
+						      (markup-option n (symbol->keyword
+									(markup-markup x))))))
+					   (container-body bb))))
+		       ;; avoid to produce an empty table
+		       (unless (null? lst)
+			  (display "<table cellspacing=\"1\" cellpadding=\"1\" width=\"100%\"")
+			  (html-class n)
+			  (display ">\n<tbody>\n")
+
+			  (for-each (lambda (n) (toc-entry n 0)) lst)
+
+			  (display "</tbody>\n</table>\n")))))))
+
+;*---------------------------------------------------------------------*/
+;*    &html-generic-document ...                                       */
+;*---------------------------------------------------------------------*/
+(define (&html-generic-document n title e)
+   (let* ((id (markup-ident n))
+	  (header (new markup
+		     (markup '&html-chapter-header)
+		     (ident (string-append id "-header"))
+		     (class (markup-class n))
+		     (parent n)
+		     (body (html-browser-title n))))
+	  (head (new markup
+		   (markup '&html-head)
+		   (ident (string-append id "-head"))
+		   (class (markup-class n))
+		   (parent n)
+		   (body header)))
+	  (ftnote (new markup
+		     (markup '&html-footnotes)
+		     (ident (string-append id "-footnote"))
+		     (class (markup-class n))
+		     (parent n)
+		     (body (reverse!
+			    (container-env-get n 'footnote-env)))))
+	  (page (new markup
+		   (markup '&html-page)
+		   (ident (string-append id "-page"))
+		   (class (markup-class n))
+		   (parent n)
+		   (body (list (markup-body n) ftnote))))
+	  (ending (new markup
+		     (markup '&html-ending)
+		     (ident (string-append id "-ending"))
+		     (class (markup-class n))
+		     (parent n)
+		     (body (or (markup-option n :ending)
+			       (let ((p (ast-document n)))
+				  (and p (markup-option p :ending)))))))
+	  (body (new markup
+		   (markup '&html-body)
+		   (ident (string-append id "-body"))
+		   (class (markup-class n))
+		   (parent n)
+		   (body (list title page ending))))
+	  (html (new markup
+		   (markup '&html-html)
+		   (ident (string-append id "-html"))
+		   (class (markup-class n))
+		   (parent n)
+		   (body (list head body)))))
+      ;; No file must be opened for documents. These files are
+      ;; directly opened by Skribe
+      (if (document? n)
+	  (output html e)
+	  (with-output-to-file (html-file n e)
+	     (lambda ()
+		(output html e))))))
+
+;*---------------------------------------------------------------------*/
+;*    &html-generic-subdocument ...                                    */
+;*---------------------------------------------------------------------*/
+(define (&html-generic-subdocument n e)
+   (let* ((p (ast-document n))
+	  (id (markup-ident n))
+	  (ti (let* ((nb (html-container-number n e))
+		     (tc (markup-option n :title))
+		     (ti (if (document? p)
+			     (list (markup-option p :title)
+				   (engine-custom e 'file-title-separator)
+				   tc)
+			     tc))
+		     (sep (engine-custom
+			     e
+			     (symbol-append (markup-markup n)
+					    '-title-number-separator)))
+		     (nti (and tc
+			       (if (and nb (not (equal? nb "")))
+				   (list nb
+					 (if (unspecified? sep) ". " sep)
+					 ti)
+				   ti))))
+		 (new markup
+		    (markup (symbol-append '&html- (markup-markup n) '-title))
+		    (ident (string-append id "-title"))
+		    (parent n)
+		    (options '((author ())))
+		    (body nti)))))
+      (case (markup-markup n)
+	 ((chapter)
+	  (skribe-message "  [~s chapter: ~a]\n" (engine-ident e) id))
+	 ((section)
+	  (skribe-message "    [~s section: ~a]\n" (engine-ident e) id)))
+      (&html-generic-document n ti e)))
+
+;*---------------------------------------------------------------------*/
+;*    chapter ... @label chapter@                                      */
+;*---------------------------------------------------------------------*/
+(markup-writer 'chapter
+   :options '(:title :number :file :toc :html-title :env)
+   :before (lambda (n e)
+	      (let ((title (markup-option n :title))
+		    (ident (markup-ident n)))
+		 (display "<!-- ")
+		 (output title html-title-engine)
+		 (display " -->\n")
+		 (display "<a name=\"")
+		 (display (string-canonicalize ident))
+		 (display "\"></a>\n")
+		 (display "<center><h1")
+		 (html-class n)
+		 (display ">")
+		 (output (html-container-number n e) e)
+		 (display " ")
+		 (output (markup-option n :title) e)
+		 (display "</h1></center>")))
+   :after "<br>")
+
+;; This writer is invoked only for chapters rendered inside separate files!
+(markup-writer 'chapter
+   :options '(:title :number :file :toc :html-title :env)
+   :predicate (lambda (n e)
+		 (or (markup-option n :file)
+		     (engine-custom e 'chapter-file)))
+   :action &html-generic-subdocument)
+
+;*---------------------------------------------------------------------*/
+;*    html-section-title ...                                           */
+;*---------------------------------------------------------------------*/
+(define (html-section-title n e)
+   (let* ((title (markup-option n :title))
+	  (number (markup-option n :number))
+	  (c (markup-class n))
+	  (ident (markup-ident n))
+	  (kind (markup-markup n))
+	  (tbg (engine-custom e (symbol-append kind '-title-background)))
+	  (tfg (engine-custom e (symbol-append kind '-title-foreground)))
+	  (tstart (engine-custom e (symbol-append kind '-title-start)))
+	  (tstop (engine-custom e (symbol-append kind '-title-stop)))
+	  (nsep (engine-custom e (symbol-append kind '-title-number-separator))))
+      ;; the section header
+      (display "<!-- ")
+      (output title html-title-engine)
+      (display " -->\n")
+      (display "<a name=\"")
+      (display (string-canonicalize ident))
+      (display "\"></a>\n")
+      (if c
+	  (printf "<div class=\"~a-atitle\">" c)
+	  (printf "<div class=\"skribe~atitle\">" (markup-markup n)))
+      (when (html-color-spec? tbg)
+	 (display "<table width=\"100%\">")
+	 (printf "<tr><td bgcolor=\"~a\">" tbg))
+      (display tstart)
+      (if tfg (printf "<font color=\"~a\">" tfg))
+      (if number
+	  (begin
+	     (output (html-container-number n e) e)
+	     (output nsep e)))
+      (output title e)
+      (if tfg (display "</font>\n"))
+      (display tstop)
+      (when (and (string? tbg) (> (string-length tbg) 0))
+	 (display "</td></tr></table>\n"))
+      (display "</div>")
+      (display "<div")
+      (html-class n)
+      (display ">"))
+   (newline))
+
+;*---------------------------------------------------------------------*/
+;*    section ...  @label section@                                     */
+;*---------------------------------------------------------------------*/
+(markup-writer 'section
+   :options '(:title :html-title :number :toc :file :env)
+   :before html-section-title
+   :after "</div><br>\n")
+
+;; on-file section writer
+(markup-writer 'section
+   :options '(:title :html-title :number :toc :file :env)
+   :predicate (lambda (n e)
+		 (or (markup-option n :file)
+		     (engine-custom e 'section-file)))
+   :action &html-generic-subdocument)
+
+;*---------------------------------------------------------------------*/
+;*    subsection ... @label subsection@                                */
+;*---------------------------------------------------------------------*/
+(markup-writer 'subsection
+   :options '(:title :html-title :number :toc :env :file)
+   :before html-section-title
+   :after "</div>\n")
+
+;; on-file subsection writer
+(markup-writer 'section
+   :options '(:title :html-title :number :toc :file :env)
+   :predicate (lambda (n e)
+		 (or (markup-option n :file)
+		     (engine-custom e 'subsection-file)))
+   :action &html-generic-subdocument)
+
+;*---------------------------------------------------------------------*/
+;*    subsubsection ... @label subsubsection@                          */
+;*---------------------------------------------------------------------*/
+(markup-writer 'subsubsection
+   :options '(:title :html-title :number :toc :env :file)
+   :before html-section-title
+   :after "</div>\n")
+
+;; on-file subsection writer
+(markup-writer 'section
+   :options '(:title :html-title :number :toc :file :env)
+   :predicate (lambda (n e)
+		 (or (markup-option n :file)
+		     (engine-custom e 'subsubsection-file)))
+   :action &html-generic-subdocument)
+
+;*---------------------------------------------------------------------*/
+;*    paragraph ...                                                    */
+;*---------------------------------------------------------------------*/
+(markup-writer 'paragraph
+   :before (lambda (n e)
+	      (when (and (>= (skribe-debug) 2) (location? (ast-loc n)))
+		 (printf "<span style=\"display: block; position: relative; left: -2cm; font-size: x-small; font-style: italic; color: ff8e1e;\">~a</span>"
+			 (ast-location n)))
+	      ((html-markup-class "p") n e))
+   :after "</p>")
+
+;*---------------------------------------------------------------------*/
+;*    footnote ...                                                     */
+;*---------------------------------------------------------------------*/
+(markup-writer 'footnote
+   :options '(:number)
+   :action (lambda (n e)
+	      (printf "<a href=\"#footnote-~a\"><sup><small>~a</small></sup></a>"
+		      (string-canonicalize (container-ident n))
+		      (markup-option n :number))))
+
+;*---------------------------------------------------------------------*/
+;*    linebreak ...                                                    */
+;*---------------------------------------------------------------------*/
+(markup-writer 'linebreak
+	       :before (lambda (n e)
+			  (display "<br")
+			  (html-class n)
+			  (display "/>")))
+
+;*---------------------------------------------------------------------*/
+;*    hrule ...                                                        */
+;*---------------------------------------------------------------------*/
+(markup-writer 'hrule
+   :options '(:width :height)
+   :before (lambda (n e)
+	      (let ((width (markup-option n :width))
+		    (height (markup-option n :height)))
+		 (display "<hr")
+		 (html-class n)
+		 (if (< width 100)
+		     (printf " width=\"~a\"" (html-width width)))
+		 (if (> height 1)
+		     (printf " size=\"~a\"" height))
+		 (display ">"))))
+
+;*---------------------------------------------------------------------*/
+;*    color ...                                                        */
+;*---------------------------------------------------------------------*/
+(markup-writer 'color
+   :options '(:bg :fg :width :margin)
+   :before (lambda (n e)
+	      (let ((m (markup-option n :margin))
+		    (w (markup-option n :width))
+		    (bg (markup-option n :bg))
+		    (fg (markup-option n :fg)))
+		 (when (html-color-spec? bg)
+		    (display "<table cellspacing=\"0\"")
+		    (html-class n)
+		    (printf " cellpadding=\"~a\"" (if m m 0))
+		    (if w (printf " width=\"~a\"" (html-width w)))
+		    (display "><tbody>\n<tr>")
+		    (display "<td bgcolor=\"")
+		    (output bg e)
+		    (display "\">"))
+		 (when (html-color-spec? fg)
+		    (display "<font color=\"")
+		    (output fg e)
+		    (display "\">"))))
+   :after (lambda (n e)
+	     (when (html-color-spec? (markup-option n :fg))
+		(display "</font>"))
+	     (when (html-color-spec? (markup-option n :bg))
+		(display "</td></tr>\n</tbody></table>"))))
+
+;*---------------------------------------------------------------------*/
+;*    frame ...                                                        */
+;*---------------------------------------------------------------------*/
+(markup-writer 'frame
+   :options '(:width :margin :border)
+   :before (lambda (n e)
+	      (let ((m (markup-option n :margin))
+		    (b (markup-option n :border))
+		    (w (markup-option n :width)))
+		 (display "<table cellspacing=\"0\"")
+		 (html-class n)
+		 (printf " cellpadding=\"~a\"" (if m m 0))
+		 (printf " border=\"~a\"" (if b b 0))
+		 (if w (printf " width=\"~a\"" (html-width w)))
+		 (display "><tbody>\n<tr><td>")))
+   :after "</td></tr>\n</tbody></table>")
+
+;*---------------------------------------------------------------------*/
+;*    font ...                                                         */
+;*---------------------------------------------------------------------*/
+(markup-writer 'font
+   :options '(:size :face)
+   :before (lambda (n e)
+	      (let ((size (markup-option n :size))
+		    (face (markup-option n :face)))
+		 (when (and (number? size) (inexact? size))
+		    (let ((s (if (> size 0) "<big>" "<small>"))
+			  (d (if (> size 0) 1 -1)))
+		       (do ((i (inexact->exact size) (- i d)))
+			   ((= i 0))
+			   (display s))))
+		 (when (or (and (number? size) (exact? size)) face)
+		    (display "<font")
+		    (html-class n)
+		    (when (and (number? size) (exact? size) (not (= size 0)))
+		       (printf " size=\"~a\"" size))
+		    (when face (printf " face=\"~a\"" face))
+		    (display ">"))))
+   :after (lambda (n e)
+	     (let ((size (markup-option n :size))
+		   (face (markup-option n :face)))
+		(when (or (and (number? size) (exact? size) (not (= size 0)))
+			  face)
+		   (display "</font>"))
+		(when (and (number? size) (inexact? size))
+		   (let ((s (if (> size 0) "</big>" "</small>"))
+			 (d (if (> size 0) 1 -1)))
+		      (do ((i (inexact->exact size) (- i d)))
+			  ((= i 0))
+			  (display s)))))))
+
+;*---------------------------------------------------------------------*/
+;*    flush ...                                                        */
+;*---------------------------------------------------------------------*/
+(markup-writer 'flush
+   :options '(:side)
+   :before (lambda (n e)
+	      (case (markup-option n :side)
+		 ((center)
+		  (display "<center")
+		  (html-class n)
+		  (display ">\n"))
+		 ((left)
+		  (display "<p style=\"text-align:left;\"")
+		  (html-class n)
+		  (display ">\n"))
+		 ((right)
+		  (display "<table ")
+		  (html-class n)
+		  (display "width=\"100%\" cellpadding=\"0\" cellspacing=\"0\" border=\"0\"><tr><td align=\"right\">"))
+		 (else
+		  (skribe-error 'flush
+				"Illegal side"
+				(markup-option n :side)))))
+   :after (lambda (n e)
+	     (case (markup-option n :side)
+		((center)
+		 (display "</center>\n"))
+		((right)
+		 (display "</td></tr></table>\n"))
+		((left)
+		 (display "</p>\n")))))
+
+;*---------------------------------------------------------------------*/
+;*    center ...                                                       */
+;*---------------------------------------------------------------------*/
+(markup-writer 'center
+   :before (html-markup-class "center")
+   :after "</center>\n")
+
+;*---------------------------------------------------------------------*/
+;*    pre ...                                                          */
+;*---------------------------------------------------------------------*/
+(markup-writer 'pre :before (html-markup-class "pre") :after "</pre>\n")
+
+;*---------------------------------------------------------------------*/
+;*    prog ...                                                         */
+;*---------------------------------------------------------------------*/
+(markup-writer 'prog
+   :options '(:line :mark)
+   :before (html-markup-class "pre")
+   :after "</pre>\n")
+
+;*---------------------------------------------------------------------*/
+;*    itemize ...                                                      */
+;*---------------------------------------------------------------------*/
+(markup-writer 'itemize
+   :options '(:symbol)
+   :before (html-markup-class "ul")
+   :action (lambda (n e)
+	      (for-each (lambda (item)
+			  (let ((ident (and (markup? item)
+					    (markup-ident item))))
+			   (display "<li")
+			   (html-class item)
+			   (display ">")
+			    (if ident  ;; produce an anchor
+				(printf "\n<a name=\"~a\"></a>\n"
+					(string-canonicalize ident)))
+			   (output item e)
+			    (display "</li>\n")))
+			(markup-body n)))
+   :after "</ul>")
+
+;*---------------------------------------------------------------------*/
+;*    enumerate ...                                                    */
+;*---------------------------------------------------------------------*/
+(markup-writer 'enumerate
+   :options '(:symbol)
+   :before (html-markup-class "ol")
+   :action (lambda (n e)
+	      (for-each (lambda (item)
+			  (let ((ident (and (markup? item)
+					    (markup-ident item))))
+			   (display "<li")
+			   (html-class item)
+			   (display ">")
+			    (if ident  ;; produce an anchor
+				(printf "\n<a name=\"~a\"></a>\n" ident))
+			   (output item e)
+			    (display "</li>\n")))
+			(markup-body n)))
+   :after "</ol>")
+
+;*---------------------------------------------------------------------*/
+;*    description ...                                                  */
+;*---------------------------------------------------------------------*/
+(markup-writer 'description
+   :options '(:symbol)
+   :before (html-markup-class "dl")
+   :action (lambda (n e)
+	      (for-each (lambda (item)
+			   (let ((k (markup-option item :key)))
+			      (for-each (lambda (i)
+					   (display " <dt")
+					   (html-class i)
+					   (display ">")
+					   (output i e)
+					   (display "</dt>"))
+					(if (pair? k) k (list k)))
+			      (display "<dd")
+			      (html-class item)
+			      (display ">")
+			      (output (markup-body item) e)
+			      (display "</dd>\n")))
+			(markup-body n)))
+   :after "</dl>")
+
+;*---------------------------------------------------------------------*/
+;*    item ...                                                         */
+;*---------------------------------------------------------------------*/
+(markup-writer 'item
+   :options '(:key)
+   :action (lambda (n e)
+	      (let ((k (markup-option n :key)))
+		 (if k
+		     (begin
+			(display "<b")
+			(html-class n)
+			(display ">")
+			(output k e)
+			(display "</b> "))))
+	      (output (markup-body n) e)))
+
+;*---------------------------------------------------------------------*/
+;*    blockquote ...                                                   */
+;*---------------------------------------------------------------------*/
+(markup-writer 'blockquote
+   :options '()
+   :before (lambda (n e)
+	     (display "<blockquote ")
+	     (html-class n)
+	     (display ">\n"))
+   :after "\n</blockquote>\n")
+
+;*---------------------------------------------------------------------*/
+;*    figure ... @label figure@                                        */
+;*---------------------------------------------------------------------*/
+(markup-writer 'figure
+   :options '(:legend :number :multicolumns :legend-width)
+   :before (html-markup-class "br")
+   :action (lambda (n e)
+	      (let ((ident (markup-ident n))
+		    (number (markup-option n :number))
+		    (legend (markup-option n :legend)))
+		 (display "<a name=\"")
+		 (display (string-canonicalize ident))
+		 (display "\"></a>\n")
+		 (output (markup-body n) e)
+		 (display "<br>\n")
+		 (output (new markup
+			    (markup '&html-figure-legend)
+			    (parent n)
+			    (ident (string-append ident "-legend"))
+			    (class (markup-class n))
+			    (options `((:number ,number)))
+			    (body legend))
+			 e)))
+   :after "<br>")
+
+;*---------------------------------------------------------------------*/
+;*    &html-figure-legend ...                                          */
+;*---------------------------------------------------------------------*/
+(markup-writer '&html-figure-legend
+   :options '(:number)
+   :before (lambda (n e)
+	      (display "<center>")
+	      (let ((number (markup-option n :number))
+		    (legend (markup-option n :legend)))
+		 (if number
+		     (printf "<strong>Fig. ~a:</strong> " number)
+		     (printf "<strong>Fig. :</strong> "))))
+   :after "</center>")
+
+;*---------------------------------------------------------------------*/
+;*    table ...                                                        */
+;*---------------------------------------------------------------------*/
+(markup-writer 'table
+   :options '(:border :width :frame :rules :cellstyle :cellpadding :cellspacing)
+   :before (lambda (n e)
+	      (let ((width (markup-option n :width))
+		    (border (markup-option n :border))
+		    (frame (markup-option n :frame))
+		    (rules (markup-option n :rules))
+		    (cstyle (markup-option n :cellstyle))
+		    (cp (markup-option n :cellpadding))
+		    (cs (markup-option n :cellspacing)))
+		 (display "<table")
+		 (html-class n)
+		 (if width (printf " width=\"~a\"" (html-width width)))
+		 (if border (printf " border=\"~a\"" border))
+		 (if (and (number? cp) (>= cp 0))
+		     (printf " cellpadding=\"~a\"" cp))
+		 (if (and (number? cs) (>= cs 0))
+		     (printf " cellspacing=\"~a\"" cs))
+		 (cond
+		    ((symbol? cstyle)
+		     (printf " style=\"border-collapse: ~a;\"" cstyle))
+		    ((string? cstyle)
+		     (printf " style=\"border-collapse: separate; border-spacing=~a\"" cstyle))
+		    ((number? cstyle)
+		     (printf " style=\"border-collapse: separate; border-spacing=~apt\"" cstyle)))
+		 (if frame
+		     (printf " frame=\"~a\""
+			     (if (eq? frame 'none) "void" frame)))
+		 (if (and rules (not (eq? rules 'header)))
+		     (printf " rules=\"~a\"" rules))
+		 (display "><tbody>\n")))
+   :after "</tbody></table>\n")
+
+;*---------------------------------------------------------------------*/
+;*    tr ...                                                           */
+;*---------------------------------------------------------------------*/
+(markup-writer 'tr
+   :options '(:bg)
+   :before (lambda (n e)
+	      (let ((bg (markup-option n :bg)))
+		 (display "<tr")
+		 (html-class n)
+		 (when (html-color-spec? bg) (printf " bgcolor=\"~a\"" bg))
+		 (display ">")))
+   :after "</tr>\n")
+
+;*---------------------------------------------------------------------*/
+;*    tc ...                                                           */
+;*---------------------------------------------------------------------*/
+(markup-writer 'tc
+   :options '(markup :width :align :valign :colspan :rowspan :bg)
+   :before (lambda (n e)
+	      (let ((markup (or (markup-option n 'markup) 'td))
+		    (width (markup-option n :width))
+		    (align (markup-option n :align))
+		    (valign (let ((v (markup-option n :valign)))
+			       (cond
+				  ((or (eq? v 'center)
+				       (equal? v "center"))
+				   "middle")
+				  (else
+				   v))))
+		    (colspan (markup-option n :colspan))
+		    (rowspan (markup-option n :rowspan))
+		    (bg (markup-option n :bg)))
+		 (printf "<~a" markup)
+		 (html-class n)
+		 (if width (printf " width=\"~a\"" (html-width width)))
+		 (if align (printf " align=\"~a\"" align))
+		 (if valign (printf " valign=\"~a\"" valign))
+		 (if colspan (printf " colspan=\"~a\"" colspan))
+		 (if rowspan (printf " rowspan=\"~a\"" rowspan))
+		 (when (html-color-spec? bg)
+		    (printf " bgcolor=\"~a\"" bg))
+		 (display ">")))
+   :after (lambda (n e)
+	     (let ((markup (or (markup-option n 'markup) 'td)))
+		(printf "</~a>" markup))))
+
+;*---------------------------------------------------------------------*/
+;*    image ... @label image@                                          */
+;*---------------------------------------------------------------------*/
+(markup-writer 'image
+   :options '(:file :url :width :height)
+   :action (lambda (n e)
+	      (let* ((file (markup-option n :file))
+		     (url (markup-option n :url))
+		     (width (markup-option n :width))
+		     (height (markup-option n :height))
+		     (body (markup-body n))
+		     (efmt (engine-custom e 'image-format))
+		     (img (or url (convert-image file
+						 (if (list? efmt)
+						     efmt
+						     '("gif" "jpg" "png"))))))
+		 (if (not (string? img))
+		     (skribe-error 'html "Illegal image" file)
+		     (begin
+			(printf "<img src=\"~a\" border=\"0\"" img)
+			(html-class n)
+			(if body
+			    (begin
+			       (display " alt=\"")
+			       (output body e)
+			       (display "\""))
+			    (printf " alt=\"~a\"" file))
+			(if width (printf " width=\"~a\"" (html-width width)))
+			(if height (printf " height=\"~a\"" height))
+			(display ">"))))))
+
+;*---------------------------------------------------------------------*/
+;*    Ornaments ...                                                    */
+;*---------------------------------------------------------------------*/
+(markup-writer 'roman :before "")
+(markup-writer 'bold :before (html-markup-class "strong") :after "</strong>")
+(markup-writer 'underline :before (html-markup-class "u") :after "</u>")
+(markup-writer 'strike :before (html-markup-class "strike") :after "</strike>")
+(markup-writer 'emph :before (html-markup-class "em") :after "</em>")
+(markup-writer 'kbd :before (html-markup-class "kbd") :after "</kbd>")
+(markup-writer 'it :before (html-markup-class "em") :after "</em>")
+(markup-writer 'tt :before (html-markup-class "tt") :after "</tt>")
+(markup-writer 'code :before (html-markup-class "code") :after "</code>")
+(markup-writer 'var :before (html-markup-class "var") :after "</var>")
+(markup-writer 'samp :before (html-markup-class "samp") :after "</samp>")
+(markup-writer 'sc :before "<span class=\"sc\">" :after "</span>")
+(markup-writer 'sf :before "<span class=\"sf\">" :after "</span>")
+(markup-writer 'sub :before (html-markup-class "sub") :after "</sub>")
+(markup-writer 'sup :before (html-markup-class "sup") :after "</sup>")
+
+;*---------------------------------------------------------------------*/
+;*    q ... @label q@                                                  */
+;*---------------------------------------------------------------------*/
+(markup-writer 'q
+   :before "\""
+   :after "\"")
+
+;*---------------------------------------------------------------------*/
+;*    mailto ... @label mailto@                                        */
+;*---------------------------------------------------------------------*/
+(markup-writer 'mailto
+   :options '(:text)
+   :action (lambda (n e)
+	      (let ((text (markup-option n :text)))
+		 (display "<a href=\"mailto:")
+		 (output (markup-body n) e)
+		 (display #\")
+		 (html-class n)
+		 (display #\>)
+		 (if text
+		     (output text e)
+		     (skribe-eval (tt (markup-body n)) e))
+		 (display "</a>"))))
+
+;*---------------------------------------------------------------------*/
+;*    mailto ... @label mailto@                                        */
+;*---------------------------------------------------------------------*/
+(markup-writer 'mailto
+   :options '(:text)
+   :predicate (lambda (n e)
+		 (and (engine-custom e 'javascript)
+		      (or (string? (markup-body n))
+			  (and (pair? (markup-body n))
+			       (null? (cdr (markup-body n)))
+			       (string? (car (markup-body n)))))))
+   :action (lambda (n e)
+	      (let* ((body (markup-body n))
+		     (email (if (string? body) body (car body)))
+		     (split (pregexp-split "@" email))
+		     (na (car split))
+		     (do (if (pair? (cdr split)) (cadr split) ""))
+		     (nn (pregexp-replace* "[.]" na " "))
+		     (dd (pregexp-replace* "[.]" do " "))
+		     (text (markup-option n :text)))
+		(display "<script language=\"JavaScript\" type=\"text/javascript\"")
+		(if (not text)
+		    (printf ">skribenospam( ~s, ~s, true )" nn dd)
+		    (begin
+		      (printf ">skribenospam( ~s, ~s, false )" nn dd)
+		      (display "</script>")
+		      (output text e)
+		      (display "<script language=\"JavaScript\" type=\"text/javascript\">document.write(\"</\" + \"a>\")")))
+		(display "</script>\n"))))
+
+;*---------------------------------------------------------------------*/
+;*    mark ... @label mark@                                            */
+;*---------------------------------------------------------------------*/
+(markup-writer 'mark
+   :before (lambda (n e)
+	      (printf "<a name=\"~a\"" (string-canonicalize (markup-ident n)))
+	      (html-class n)
+	      (display ">"))
+   :after "</a>")
+
+;*---------------------------------------------------------------------*/
+;*    ref ... @label ref@                                              */
+;*---------------------------------------------------------------------*/
+(markup-writer 'ref
+   :options '(:text :chapter :section :subsection :subsubsection :figure :mark :handle)
+   :before (lambda (n e)
+	      (let* ((c (handle-ast (markup-body n)))
+		     (id (markup-ident c))
+		     (f (html-file c e))
+		     (class (if (markup-class n)
+				(markup-class n)
+				"inbound")))
+		 (printf "<a href=\"~a#~a\" class=\"~a\""
+			 (if (string=? f *skribe-dest*)
+			     ""
+			     (strip-ref-base (or f *skribe-dest* "")))
+			 (string-canonicalize id)
+			 class)
+		 (display ">")))
+   :action (lambda (n e)
+	      (let ((t (markup-option n :text))
+		    (m (markup-option n 'mark))
+		    (f (markup-option n :figure))
+		    (c (markup-option n :chapter))
+		    (s (markup-option n :section))
+		    (ss (markup-option n :subsection))
+		    (sss (markup-option n :subsubsection)))
+		 (cond
+		    (t
+		     (output t e))
+		    (f
+		     (output (new markup
+				(markup '&html-figure-ref)
+				(body (markup-body n)))
+			     e))
+		    ((or c s ss sss)
+		     (output (new markup
+				(markup '&html-section-ref)
+				(body (markup-body n)))
+			     e))
+
+		    ((not m)
+		     (output (new markup
+				(markup '&html-unmark-ref)
+				(body (markup-body n)))
+			     e))
+		    (else
+		     (display m)))))
+   :after "</a>")
+
+;*---------------------------------------------------------------------*/
+;*    &html-figure-ref ...                                             */
+;*---------------------------------------------------------------------*/
+(markup-writer '&html-figure-ref
+   :action (lambda (n e)
+	      (let ((c (handle-ast (markup-body n))))
+		 (if (or (not (markup? c))
+			 (not (is-markup? c 'figure)))
+		     (display "???")
+		     (output (markup-option c :number) e)))))
+
+;*---------------------------------------------------------------------*/
+;*    &html-section-ref ...                                            */
+;*---------------------------------------------------------------------*/
+(markup-writer '&html-section-ref
+   :action (lambda (n e)
+	      (let ((c (handle-ast (markup-body n))))
+		 (if (not (markup? c))
+		     (display "???")
+		     (output (markup-option c :title) e)))))
+
+;*---------------------------------------------------------------------*/
+;*    &html-unmark-ref ...                                             */
+;*---------------------------------------------------------------------*/
+(markup-writer '&html-unmark-ref
+   :action (lambda (n e)
+	      (let ((c (handle-ast (markup-body n))))
+		 (if (not (markup? c))
+		     (display "???")
+		     (let ((t (markup-option c :title)))
+			(if t
+			    (output t e)
+			    (let ((l (markup-option c :legend)))
+			       (if l
+				   (output t e)
+				   (display
+				    (string-canonicalize
+				     (markup-ident c)))))))))))
+
+;*---------------------------------------------------------------------*/
+;*    bib-ref ...                                                      */
+;*---------------------------------------------------------------------*/
+(markup-writer 'bib-ref
+   :options '(:text :bib)
+   :before "["
+   :action (lambda (n e) (output n e (markup-writer-get 'ref e)))
+   :after "]")
+
+;*---------------------------------------------------------------------*/
+;*    bib-ref+ ...                                                     */
+;*---------------------------------------------------------------------*/
+(markup-writer 'bib-ref+
+   :options '(:text :bib)
+   :before "["
+   :action (lambda (n e)
+	      (let loop ((rs (markup-body n)))
+		 (cond
+		    ((null? rs)
+		     #f)
+		    (else
+		     (if (is-markup? (car rs) 'bib-ref)
+			 (output (car rs) e (markup-writer-get 'ref e))
+			 (output (car rs) e))
+		     (if (pair? (cdr rs))
+			 (begin
+			    (display ",")
+			    (loop (cdr rs))))))))
+   :after "]")
+
+;*---------------------------------------------------------------------*/
+;*    url-ref ...                                                      */
+;*---------------------------------------------------------------------*/
+(markup-writer 'url-ref
+   :options '(:url :text)
+   :before (lambda (n e)
+	      (let* ((url (markup-option n :url))
+		     (class (cond
+			       ((markup-class n)
+				(markup-class n))
+			       ((not (string? url))
+				#f)
+			       (else
+				(let ((l (string-length url)))
+				   (let loop ((i 0))
+				      (cond
+					 ((= i l)
+					  #f)
+					 ((char=? (string-ref url i) #\:)
+					  (substring url 0 i))
+					 (else
+					  (loop (+ i 1))))))))))
+		 (display "<a href=\"")
+		 (output url html-title-engine)
+		 (display "\"")
+		 (when class (printf " class=\"~a\"" class))
+		 (display ">")))
+   :action (lambda (n e)
+	      (let ((v (markup-option n :text)))
+		 (output (or v (markup-option n :url)) e)))
+   :after "</a>")
+
+;*---------------------------------------------------------------------*/
+;*    line-ref ...                                                     */
+;*---------------------------------------------------------------------*/
+(markup-writer 'line-ref
+   :options '(:offset)
+   :before (html-markup-class "i")
+   :action (lambda (n e)
+	      (let ((o (markup-option n :offset))
+		    (v (string->number (markup-option n :text))))
+		 (if (and (number? o) (number? v))
+		     (markup-option-add! n :text (+ o v)))
+		 (output n e (markup-writer-get 'ref e))
+		 (if (and (number? o) (number? v))
+		     (markup-option-add! n :text v))))
+   :after "</i>")
+
+;*---------------------------------------------------------------------*/
+;*    page-ref ...                                                     */
+;*---------------------------------------------------------------------*/
+(markup-writer 'page-ref
+   :options '(:mark :handle)
+   :action (lambda (n e)
+	      (error 'page-ref:html "Not implemented yet" n)))
+
+;*---------------------------------------------------------------------*/
+;*    &bib-entry-label ...                                             */
+;*---------------------------------------------------------------------*/
+(markup-writer '&bib-entry-label
+   :options '(:title)
+   :before (lambda (n e)
+	      (printf "<a name=\"~a\"" (string-canonicalize (markup-ident n)))
+	      (html-class n)
+	      (display ">"))
+   :action (lambda (n e)
+	      (output n e (markup-writer-get '&bib-entry-label base-engine)))
+   :after "</a>")
+
+;*---------------------------------------------------------------------*/
+;*    &bib-entry-title ...                                             */
+;*---------------------------------------------------------------------*/
+(markup-writer '&bib-entry-title
+   :action (lambda (n e)
+	      (let* ((t (bold (markup-body n)))
+		     (en (handle-ast (ast-parent n)))
+		     (url (or (markup-option en 'url)
+			      (markup-option en 'documenturl)))
+		     (ht (if url (ref :url (markup-body url) :text t) t)))
+		 (skribe-eval ht e))))
+
+;*---------------------------------------------------------------------*/
+;*    &bib-entry-url ...                                               */
+;*---------------------------------------------------------------------*/
+(markup-writer '&bib-entry-url
+   :action (lambda (n e)
+	      (let* ((en (handle-ast (ast-parent n)))
+		     (url (markup-option en 'url))
+		     (t (bold (markup-body url))))
+		 (skribe-eval (ref :url (markup-body url) :text t) e))))
+
+;*---------------------------------------------------------------------*/
+;*    &the-index-header ...                                            */
+;*---------------------------------------------------------------------*/
+(markup-writer '&the-index-header
+   :action (lambda (n e)
+	      (display "<center")
+	      (html-class n)
+	      (display ">")
+	      (for-each (lambda (h)
+			   (let ((f (engine-custom e 'index-header-font-size)))
+			      (if f
+				  (skribe-eval (font :size f (bold (it h))) e)
+				  (output h e))
+			      (display " ")))
+			(markup-body n))
+	      (display "</center>")
+	      (skribe-eval (linebreak 2) e)))
+
+;*---------------------------------------------------------------------*/
+;*    &source-comment ...                                              */
+;*---------------------------------------------------------------------*/
+(markup-writer '&source-comment
+   :action (lambda (n e)
+	      (let* ((cc (engine-custom e 'source-comment-color))
+		     (n1 (it (markup-body n)))
+		     (n2 (if (and (engine-custom e 'source-color) cc)
+			     (color :fg cc n1)
+			     n1)))
+		 (skribe-eval n2 e))))
+
+;*---------------------------------------------------------------------*/
+;*    &source-line-comment ...                                         */
+;*---------------------------------------------------------------------*/
+(markup-writer '&source-line-comment
+   :action (lambda (n e)
+	      (let* ((cc (engine-custom e 'source-comment-color))
+		     (n1 (bold (markup-body n)))
+		     (n2 (if (and (engine-custom e 'source-color) cc)
+			     (color :fg cc n1)
+			     n1)))
+		 (skribe-eval n2 e))))
+
+;*---------------------------------------------------------------------*/
+;*    &source-keyword ...                                              */
+;*---------------------------------------------------------------------*/
+(markup-writer '&source-keyword
+   :action (lambda (n e)
+	      (skribe-eval (bold (markup-body n)) e)))
+
+;*---------------------------------------------------------------------*/
+;*    &source-error ...                                                */
+;*---------------------------------------------------------------------*/
+(markup-writer '&source-error
+   :action (lambda (n e)
+	      (let* ((cc (engine-custom e 'source-error-color))
+		     (n1 (bold (markup-body n)))
+		     (n2 (if (and (engine-custom e 'source-color) cc)
+			     (color :fg cc n1)
+			     n1)))
+		 (skribe-eval n2 e))))
+
+;*---------------------------------------------------------------------*/
+;*    &source-define ...                                               */
+;*---------------------------------------------------------------------*/
+(markup-writer '&source-define
+   :action (lambda (n e)
+	      (let* ((cc (engine-custom e 'source-define-color))
+		     (n1 (bold (markup-body n)))
+		     (n2 (if (and (engine-custom e 'source-color) cc)
+			     (color :fg cc n1)
+			     n1)))
+		 (skribe-eval n2 e))))
+
+;*---------------------------------------------------------------------*/
+;*    &source-module ...                                               */
+;*---------------------------------------------------------------------*/
+(markup-writer '&source-module
+   :action (lambda (n e)
+	      (let* ((cc (engine-custom e 'source-module-color))
+		     (n1 (bold (markup-body n)))
+		     (n2 (if (and (engine-custom e 'source-color) cc)
+			     (color :fg cc n1)
+			     n1)))
+		 (skribe-eval n2 e))))
+
+;*---------------------------------------------------------------------*/
+;*    &source-markup ...                                               */
+;*---------------------------------------------------------------------*/
+(markup-writer '&source-markup
+   :action (lambda (n e)
+	      (let* ((cc (engine-custom e 'source-markup-color))
+		     (n1 (bold (markup-body n)))
+		     (n2 (if (and (engine-custom e 'source-color) cc)
+			     (color :fg cc n1)
+			     n1)))
+		 (skribe-eval n2 e))))
+
+;*---------------------------------------------------------------------*/
+;*    &source-thread ...                                               */
+;*---------------------------------------------------------------------*/
+(markup-writer '&source-thread
+   :action (lambda (n e)
+	      (let* ((cc (engine-custom e 'source-thread-color))
+		     (n1 (bold (markup-body n)))
+		     (n2 (if (and (engine-custom e 'source-color) cc)
+			     (color :fg cc n1)
+			     n1)))
+		 (skribe-eval n2 e))))
+
+;*---------------------------------------------------------------------*/
+;*    &source-string ...                                               */
+;*---------------------------------------------------------------------*/
+(markup-writer '&source-string
+   :action (lambda (n e)
+	      (let* ((cc (engine-custom e 'source-string-color))
+		     (n1 (markup-body n))
+		     (n2 (if (and (engine-custom e 'source-color) cc)
+			     (color :fg cc n1)
+			     n1)))
+		 (skribe-eval n2 e))))
+
+;*---------------------------------------------------------------------*/
+;*    &source-bracket ...                                               */
+;*---------------------------------------------------------------------*/
+(markup-writer '&source-bracket
+   :action (lambda (n e)
+	      (let* ((cc (engine-custom e 'source-bracket-color))
+		     (n1 (markup-body n))
+		     (n2 (if (and (engine-custom e 'source-color) cc)
+			     (color :fg cc (bold n1))
+			     (bold n1))))
+		 (skribe-eval n2 e))))
+
+;*---------------------------------------------------------------------*/
+;*    &source-type ...                                                 */
+;*---------------------------------------------------------------------*/
+(markup-writer '&source-type
+   :action (lambda (n e)
+	      (let* ((cc (engine-custom e 'source-type-color))
+		     (n1 (markup-body n))
+		     (n2 (if (and (engine-custom e 'source-color) cc)
+			     (color :fg cc n1)
+			     (it n1))))
+		 (skribe-eval n2 e))))
+
+;*---------------------------------------------------------------------*/
+;*    &source-key ...                                                  */
+;*---------------------------------------------------------------------*/
+(markup-writer '&source-key
+   :action (lambda (n e)
+	      (let* ((cc (engine-custom e 'source-type-color))
+		     (n1 (markup-body n))
+		     (n2 (if (and (engine-custom e 'source-color) cc)
+			     (color :fg cc (bold n1))
+			     (it n1))))
+		 (skribe-eval n2 e))))
+
+;*---------------------------------------------------------------------*/
+;*    &source-type ...                                                 */
+;*---------------------------------------------------------------------*/
+(markup-writer '&source-type
+   :action (lambda (n e)
+	      (let* ((cc (engine-custom e 'source-type-color))
+		     (n1 (markup-body n))
+		     (n2 (if (and (engine-custom e 'source-color) cc)
+			     (color :fg "red" (bold n1))
+			     (bold n1))))
+		 (skribe-eval n2 e))))
+
+;*---------------------------------------------------------------------*/
+;*    Restore the base engine                                          */
+;*---------------------------------------------------------------------*/
+(default-engine-set! (find-engine 'base))
diff --git a/src/guile/skribilo/engine/html4.scm b/src/guile/skribilo/engine/html4.scm
new file mode 100644
index 0000000..614ca99
--- /dev/null
+++ b/src/guile/skribilo/engine/html4.scm
@@ -0,0 +1,167 @@
+;;;;
+;;;; html4.skr				-- HTML 4.01 Engine
+;;;;
+;;;; Copyright © 2004 Erick Gallesio - I3S-CNRS/ESSI <eg@essi.fr>
+;;;;
+;;;;
+;;;; This program is free software; you can redistribute it and/or modify
+;;;; it under the terms of the GNU General Public License as published by
+;;;; the Free Software Foundation; either version 2 of the License, or
+;;;; (at your option) any later version.
+;;;;
+;;;; This program is distributed in the hope that it will be useful,
+;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;;; GNU General Public License for more details.
+;;;;
+;;;; You should have received a copy of the GNU General Public License
+;;;; along with this program; if not, write to the Free Software
+;;;; Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+;;;; USA.
+;;;;
+;;;;           Author: Erick Gallesio [eg@essi.fr]
+;;;;    Creation date: 18-Feb-2004 11:58 (eg)
+;;;; Last file update: 26-Feb-2004 21:09 (eg)
+;;;;
+
+(define-skribe-module (skribilo engine html4))
+
+(define (find-children node)
+  (define (flat l)
+    (cond
+      ((null? l) l)
+      ((pair? l) (append (flat (car l))
+			 (flat (cdr l))))
+      (else      (list l))))
+
+  (if (markup? node)
+      (flat (markup-body node))
+      node))
+
+;;; ======================================================================
+
+(let ((le (find-engine 'html)))
+  ;;----------------------------------------------------------------------
+  ;;	Customizations
+  ;;----------------------------------------------------------------------
+  (engine-custom-set! le 'html-variant    "html4")
+  (engine-custom-set! le 'html4-logo      "http://www.w3.org/Icons/valid-html401")
+  (engine-custom-set! le 'html4-validator "http://validator.w3.org/check/referer")
+
+  ;;----------------------------------------------------------------------
+  ;;	&html-html ...
+  ;;----------------------------------------------------------------------
+  (markup-writer '&html-html le
+     :before "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">
+<html>\n"
+     :after "</html>")
+
+  ;;----------------------------------------------------------------------
+  ;;	&html-ending
+  ;;----------------------------------------------------------------------
+  (let* ((img (engine-custom le 'html4-logo))
+	 (url (engine-custom le 'html4-validator))
+	 (bottom (list (hrule)
+		      (table :width 100.
+			 (tr
+			    (td :align 'left
+			       (font :size -1 [
+				 This ,(sc "Html") page has been produced by
+				      ,(ref :url (skribe-url) :text "Skribe").
+				      ,(linebreak)
+				      Last update ,(it (date)).]))
+			    (td :align 'right :valign 'top
+			       (ref :url url
+				  :text (image :url img :width 88 :height 31))))))))
+    (markup-writer '&html-ending le
+       :before "<div class=\"skribe-ending\">"
+       :action (lambda (n e)
+		 (let ((body (markup-body n)))
+		   (if body
+		       (output body #t)
+		       (skribe-eval bottom e))))
+       :after "</div>\n"))
+
+  ;;----------------------------------------------------------------------
+  ;;	color ...
+  ;;----------------------------------------------------------------------
+  (markup-writer 'color le
+     :options '(:bg :fg :width :margin)
+     :before (lambda (n e)
+	       (let ((m    (markup-option n :margin))
+		     (w    (markup-option n :width))
+		     (bg   (markup-option n :bg))
+		     (fg   (markup-option n :fg)))
+		 (when bg
+		   (display "<table cellspacing=\"0\"")
+		   (html-class n)
+		   (printf " cellpadding=\"~a\"" (if m m 0))
+		   (if w (printf " width=\"~a\"" (html-width w)))
+		   (display "><tbody>\n<tr>")
+		   (display "<td bgcolor=\"")
+		   (output bg e)
+		   (display "\">"))
+		 (when fg
+		   (display "<span style=\"color:")
+		   (output fg e)
+		   (display ";\">"))))
+     :after (lambda (n e)
+	      (when (markup-option n :fg)
+		(display "</span>"))
+	      (when (markup-option n :bg)
+		(display "</td></tr>\n</tbody></table>"))))
+
+  ;;----------------------------------------------------------------------
+  ;;	font ...
+  ;;----------------------------------------------------------------------
+  (markup-writer 'font le
+     :options '(:size :face)
+     :before (lambda (n e)
+	       (let ((face (markup-option n :face))
+		     (size (let ((sz (markup-option n :size)))
+			     (cond
+			       ((or (unspecified? sz) (not sz))
+				#f)
+			       ((and (number? sz) (or (inexact? sz) (negative? sz)))
+				(format "~a%"
+					(+ 100
+					   (* 20 (inexact->exact (truncate sz))))))
+			       ((number? sz)
+				sz)
+			       (else
+				(skribe-error 'font
+					      (format "Illegal font size ~s" sz)
+					      n))))))
+		 (display "<span ")
+		 (html-class n)
+		 (display "style=\"")
+		 (if size (printf "font-size: ~a; " size))
+		 (if face (printf "font-family:'~a'; " face))
+		 (display "\">")))
+     :after "</span>")
+
+  ;;----------------------------------------------------------------------
+  ;;	paragraph ...
+  ;;----------------------------------------------------------------------
+  (copy-markup-writer 'paragraph le
+     :validate (lambda (n e)
+		 (let ((pred (lambda (x)
+			       (and (container? x)
+				    (not (memq (markup-markup x) '(font color)))))))
+		   (not (any pred (find-children n))))))
+
+  ;;----------------------------------------------------------------------
+  ;;	roman ...
+  ;;----------------------------------------------------------------------
+  (markup-writer 'roman le
+     :before "<span style=\"font-family: serif\">"
+     :after "</span>")
+
+  ;;----------------------------------------------------------------------
+  ;;	table ...
+  ;;----------------------------------------------------------------------
+  (let ((old-writer (markup-writer-get 'table le)))
+    (copy-markup-writer 'table le
+	:validate (lambda (n e)
+		    (not (null? (markup-body n))))))
+)
diff --git a/src/guile/skribilo/engine/latex-simple.scm b/src/guile/skribilo/engine/latex-simple.scm
new file mode 100644
index 0000000..638c158
--- /dev/null
+++ b/src/guile/skribilo/engine/latex-simple.scm
@@ -0,0 +1,103 @@
+(define-skribe-module (skribilo engine latex-simple))
+
+;;;
+;;; LES CUSTOMS SONT TROP SPECIFIQUES POUR LA DISTRIBS. NE DOIT PAS VIRER
+;;; CE FICHIER (sion simplifie il ne rest plus grand chose)
+;;;		Erick 27-10-04
+;;;
+
+
+;*=====================================================================*/
+;*    scmws04/src/latex-style.skr                                      */
+;*    -------------------------------------------------------------    */
+;*    Author      :  Damien Ciabrini                                   */
+;*    Creation    :  Tue Aug 24 19:17:04 2004                          */
+;*    Last change :  Thu Oct 28 21:45:25 2004 (eg)                     */
+;*    Copyright   :  2004 Damien Ciabrini, see LICENCE file            */
+;*    -------------------------------------------------------------    */
+;*    Custom style for Latex...                                        */
+;*=====================================================================*/
+
+(let* ((le (find-engine 'latex))
+       (oa (markup-writer-get 'author le)))
+   ; latex class & package for the workshop
+   (engine-custom-set! le 'documentclass "\\documentclass[letterpaper]{sigplan-proc}")
+   (engine-custom-set! le 'usepackage
+   "\\usepackage{epsfig}
+\\usepackage{workshop}
+\\conferenceinfo{Fifth Workshop on Scheme and Functional Programming.}
+	       {September 22, 2004, Snowbird, Utah, USA.}
+\\CopyrightYear{2004}
+\\CopyrightHolder{Damien Ciabrini}
+\\renewcommand{\\ttdefault}{cmtt}
+")
+   (engine-custom-set! le 'image-format '("eps"))
+   (engine-custom-set! le 'source-define-color "#000080")
+   (engine-custom-set! le 'source-thread-color "#8080f0")
+   (engine-custom-set! le 'source-string-color "#000000")
+
+   ; hyperref options
+   (engine-custom-set! le 'hyperref #t)
+   (engine-custom-set! le 'hyperref-usepackage
+   "\\usepackage[bookmarksopen=true, bookmarksopenlevel=2,bookmarksnumbered=true,colorlinks,linkcolor=blue,citecolor=blue,pdftitle={Debugging Scheme Fair Threads}, pdfsubject={debugging cooperative threads based on reactive programming}, pdfkeywords={debugger, functional, reactive programming, Scheme}, pdfauthor={Damien Ciabrini}]{hyperref}")
+   ; nbsp with ~ char
+   (set! latex-encoding (delete! (assoc #\~ latex-encoding) latex-encoding))
+
+   ; let latex process citations
+   (markup-writer 'bib-ref le
+      :options '(:text :bib)
+      :before "\\cite{"
+      :action (lambda (n e) (display (markup-option n :bib)))
+      :after "}")
+   (markup-writer 'bib-ref+ le
+      :options '(:text :bib)
+      :before "\\cite{"
+      :action (lambda (n e)
+		 (let loop ((bibs (markup-option n :bib)))
+		    (if (pair? bibs)
+			(begin
+			   (display (car bibs))
+			   (if (pair? (cdr bibs)) (display ", "))
+			   (loop (cdr bibs))))))
+      :after "}")
+   (markup-writer '&the-bibliography le
+      :action (lambda (n e)
+		 (print "\\bibliographystyle{abbrv}")
+		 (display "\\bibliography{biblio}")))
+
+   ; ACM-style for authors
+   (markup-writer '&latex-author le
+      :before (lambda (n e)
+		 (let ((body (markup-body n)))
+		    (if (pair? body)
+			(print "\\numberofauthors{" (length body) "}"))
+		    (print "\\author{")))
+      :after "}\n")
+   (markup-writer 'author le
+      :options (writer-options oa)
+      :before ""
+      :action (lambda (n e)
+		 (let ((name (markup-option n :name))
+		       (affiliation (markup-option n :affiliation))
+		       (address (markup-option n :address))
+		       (email (markup-option n :email)))
+		    (define (row pre n post)
+		       (display pre)
+		       (output n e)
+		       (display post)
+		       (display "\\\\\n"))
+		    ;; name
+		    (if name (row "\\alignauthor " name ""))
+		    ;; affiliation
+		    (if affiliation (row "\\affaddr{" affiliation "}"))
+		    ;; address
+		    (if (pair? address)
+			(for-each (lambda (x)
+				     (row "\\affaddr{" x "}")) address))
+		    ;; email
+		    (if email (row "\\email{" email "}"))))
+      :after "")
+)
+
+(define (include-biblio)
+   (the-bibliography))
diff --git a/src/guile/skribilo/engine/latex.scm b/src/guile/skribilo/engine/latex.scm
new file mode 100644
index 0000000..bc20493
--- /dev/null
+++ b/src/guile/skribilo/engine/latex.scm
@@ -0,0 +1,1780 @@
+;*=====================================================================*/
+;*    serrano/prgm/project/skribe/skr/latex.skr                        */
+;*    -------------------------------------------------------------    */
+;*    Author      :  Manuel Serrano                                    */
+;*    Creation    :  Tue Sep  2 09:46:09 2003                          */
+;*    Last change :  Thu May 26 12:59:47 2005 (serrano)                */
+;*    Copyright   :  2003-05 Manuel Serrano                            */
+;*    -------------------------------------------------------------    */
+;*    LaTeX Skribe engine                                              */
+;*    -------------------------------------------------------------    */
+;*    Implementation:                                                  */
+;*       common: @path ../src/common/api.src@                          */
+;*       bigloo: @path ../src/bigloo/api.bgl@                          */
+;*    -------------------------------------------------------------    */
+;*    doc:                                                             */
+;*       @ref ../../doc/user/latexe.skb:ref@                           */
+;*=====================================================================*/
+
+;*---------------------------------------------------------------------*/
+;*    latex-verbatim-encoding ...                                      */
+;*---------------------------------------------------------------------*/
+(define latex-verbatim-encoding
+   '((#\\ "{\\char92}")
+     (#\^ "{\\char94}")
+     (#\{ "\\{")
+     (#\} "\\}")
+     (#\& "\\&")
+     (#\$ "\\$")
+     (#\# "\\#")
+     (#\_ "\\_")
+     (#\% "\\%")
+     (#\~ "$_{\\mbox{\\char126}}$")
+     (#\ç "\\c{c}")
+     (#\Ç "\\c{C}")
+     (#\â "\\^{a}")
+     (#\Â "\\^{A}")
+     (#\à "\\`{a}")
+     (#\À "\\`{A}")
+     (#\é "\\'{e}")
+     (#\É "\\'{E}")
+     (#\è "\\`{e}")
+     (#\È "\\`{E}")
+     (#\ê "\\^{e}")
+     (#\Ê "\\^{E}")
+     (#\ù "\\`{u}")
+     (#\Ù "\\`{U}")
+     (#\û "\\^{u}")
+     (#\Û "\\^{U}")
+     (#\ø "{\\o}")
+     (#\ô "\\^{o}")
+     (#\Ô "\\^{O}")
+     (#\ö "\\\"{o}")
+     (#\Ö "\\\"{O}")
+     (#\î "\\^{\\i}")
+     (#\Î "\\^{I}")
+     (#\ï "\\\"{\\i}")
+     (#\Ï "\\\"{I}")
+     (#\] "{\\char93}")
+     (#\[ "{\\char91}")
+     (#\» "\\,{\\tiny{$^{\\gg}$}}")
+     (#\« "{\\tiny{$^{\\ll}$}}\\,")))
+
+;*---------------------------------------------------------------------*/
+;*    latex-encoding ...                                               */
+;*---------------------------------------------------------------------*/
+(define latex-encoding
+   (append '((#\| "$|$")
+	     (#\< "$<$")
+	     (#\> "$>$")
+	     (#\: "{\\char58}")
+	     (#\# "{\\char35}")
+	     (#\Newline " %\n"))
+	   latex-verbatim-encoding))
+		  
+;*---------------------------------------------------------------------*/
+;*    latex-tt-encoding ...                                            */
+;*---------------------------------------------------------------------*/
+(define latex-tt-encoding
+   (append '((#\. ".\\-")
+	     (#\/ "/\\-"))
+	   latex-encoding))
+		  
+;*---------------------------------------------------------------------*/
+;*    latex-pre-encoding ...                                           */
+;*---------------------------------------------------------------------*/
+(define latex-pre-encoding
+   (append '((#\Space "\\ ")
+	     (#\Newline "\\\\\n"))
+	   latex-encoding))
+
+;*---------------------------------------------------------------------*/
+;*    latex-symbol-table ...                                           */
+;*---------------------------------------------------------------------*/
+(define (latex-symbol-table math)
+   `(("iexcl" "!`")
+     ("cent" "c")
+     ("pound" "\\pounds")
+     ("yen" "Y")
+     ("section" "\\S")
+     ("mul" ,(math "^-"))
+     ("copyright" "\\copyright")
+     ("lguillemet" ,(math "\\ll"))
+     ("not" ,(math "\\neg"))
+     ("degree" ,(math "^{\\small{o}}"))
+     ("plusminus" ,(math "\\pm"))
+     ("micro" ,(math "\\mu"))
+     ("paragraph" "\\P")
+     ("middot" ,(math "\\cdot"))
+     ("rguillemet" ,(math "\\gg"))
+     ("1/4" ,(math "\\frac{1}{4}"))
+     ("1/2" ,(math "\\frac{1}{2}"))
+     ("3/4" ,(math "\\frac{3}{4}"))
+     ("iquestion" "?`")
+     ("Agrave" "\\`{A}")
+     ("Aacute" "\\'{A}")
+     ("Acircumflex" "\\^{A}")
+     ("Atilde" "\\~{A}")
+     ("Amul" "\\\"{A}")
+     ("Aring" "{\\AA}")
+     ("AEligature" "{\\AE}")
+     ("Oeligature" "{\\OE}")
+     ("Ccedilla" "{\\c{C}}")
+     ("Egrave" "{\\`{E}}")
+     ("Eacute" "{\\'{E}}")
+     ("Ecircumflex" "{\\^{E}}")
+     ("Euml" "\\\"{E}")
+     ("Igrave" "{\\`{I}}")
+     ("Iacute" "{\\'{I}}")
+     ("Icircumflex" "{\\^{I}}")
+     ("Iuml" "\\\"{I}")
+     ("ETH" "D")
+     ("Ntilde" "\\~{N}")
+     ("Ograve" "\\`{O}")
+     ("Oacute" "\\'{O}")
+     ("Ocurcumflex" "\\^{O}")
+     ("Otilde" "\\~{O}")
+     ("Ouml" "\\\"{O}")
+     ("times" ,(math "\\times"))
+     ("Oslash" "\\O")
+     ("Ugrave" "\\`{U}")
+     ("Uacute" "\\'{U}")
+     ("Ucircumflex" "\\^{U}")
+     ("Uuml" "\\\"{U}")
+     ("Yacute" "\\'{Y}")
+     ("szlig" "\\ss")
+     ("agrave" "\\`{a}")
+     ("aacute" "\\'{a}")
+     ("acircumflex" "\\^{a}")
+     ("atilde" "\\~{a}")
+     ("amul" "\\\"{a}")
+     ("aring" "\\aa")
+     ("aeligature" "\\ae")
+     ("oeligature" "{\\oe}")
+     ("ccedilla" "{\\c{c}}")
+     ("egrave" "{\\`{e}}")
+     ("eacute" "{\\'{e}}")
+     ("ecircumflex" "{\\^{e}}")
+     ("euml" "\\\"{e}")
+     ("igrave" "{\\`{\\i}}")
+     ("iacute" "{\\'{\\i}}")
+     ("icircumflex" "{\\^{\\i}}")
+     ("iuml" "\\\"{\\i}")
+     ("ntilde" "\\~{n}")
+     ("ograve" "\\`{o}")
+     ("oacute" "\\'{o}")
+     ("ocurcumflex" "\\^{o}")
+     ("otilde" "\\~{o}")
+     ("ouml" "\\\"{o}")
+     ("divide" ,(math "\\div"))
+     ("oslash" "\\o")
+     ("ugrave" "\\`{u}")
+     ("uacute" "\\'{u}")
+     ("ucircumflex" "\\^{u}")
+     ("uuml" "\\\"{u}")
+     ("yacute" "\\'{y}")
+     ("ymul" "\\\"{y}")
+     ;; Greek
+     ("Alpha" "A")
+     ("Beta" "B")
+     ("Gamma" ,(math "\\Gamma"))
+     ("Delta" ,(math "\\Delta"))
+     ("Epsilon" "E")
+     ("Zeta" "Z")
+     ("Eta" "H")
+     ("Theta" ,(math "\\Theta"))
+     ("Iota" "I")
+     ("Kappa" "K")
+     ("Lambda" ,(math "\\Lambda"))
+     ("Mu" "M")
+     ("Nu" "N")
+     ("Xi" ,(math "\\Xi"))
+     ("Omicron" "O")
+     ("Pi" ,(math "\\Pi"))
+     ("Rho" "P")
+     ("Sigma" ,(math "\\Sigma"))
+     ("Tau" "T")
+     ("Upsilon" ,(math "\\Upsilon"))
+     ("Phi" ,(math "\\Phi"))
+     ("Chi" "X")
+     ("Psi" ,(math "\\Psi"))
+     ("Omega" ,(math "\\Omega"))
+     ("alpha" ,(math "\\alpha"))
+     ("beta" ,(math "\\beta"))
+     ("gamma" ,(math "\\gamma"))
+     ("delta" ,(math "\\delta"))
+     ("epsilon" ,(math "\\varepsilon"))
+     ("zeta" ,(math "\\zeta"))
+     ("eta" ,(math "\\eta"))
+     ("theta" ,(math "\\theta"))
+     ("iota" ,(math "\\iota"))
+     ("kappa" ,(math "\\kappa"))
+     ("lambda" ,(math "\\lambda"))
+     ("mu" ,(math "\\mu"))
+     ("nu" ,(math "\\nu"))
+     ("xi" ,(math "\\xi"))
+     ("omicron" ,(math "\\o"))
+     ("pi" ,(math "\\pi"))
+     ("rho" ,(math "\\rho"))
+     ("sigmaf" ,(math "\\varsigma"))
+     ("sigma" ,(math "\\sigma"))
+     ("tau" ,(math "\\tau"))
+     ("upsilon" ,(math "\\upsilon"))
+     ("phi" ,(math "\\varphi"))
+     ("chi" ,(math "\\chi"))
+     ("psi" ,(math "\\psi"))
+     ("omega" ,(math "\\omega"))
+     ("thetasym" ,(math "\\vartheta"))
+     ("piv" ,(math "\\varpi"))
+     ;; punctuation
+     ("bullet" ,(math "\\bullet"))
+     ("ellipsis" ,(math "\\ldots"))
+     ("weierp" ,(math "\\wp"))
+     ("image" ,(math "\\Im"))
+     ("real" ,(math "\\Re"))
+     ("tm" ,(math "^{\\sc\\tiny{tm}}"))
+     ("alef" ,(math "\\aleph"))
+     ("<-" ,(math "\\leftarrow"))
+     ("<--" ,(math "\\longleftarrow"))
+     ("uparrow" ,(math "\\uparrow"))
+     ("->" ,(math "\\rightarrow"))
+     ("-->" ,(math "\\longrightarrow"))
+     ("downarrow" ,(math "\\downarrow"))
+     ("<->" ,(math "\\leftrightarrow"))
+     ("<-->" ,(math "\\longleftrightarrow"))
+     ("<+" ,(math "\\hookleftarrow"))
+     ("<=" ,(math "\\Leftarrow"))
+     ("<==" ,(math "\\Longleftarrow"))
+     ("Uparrow" ,(math "\\Uparrow"))
+     ("=>" ,(math "\\Rightarrow"))
+     ("==>" ,(math "\\Longrightarrow"))
+     ("Downarrow" ,(math "\\Downarrow"))
+     ("<=>" ,(math "\\Leftrightarrow"))
+     ("<==>" ,(math "\\Longleftrightarrow"))
+     ;; Mathematical operators
+     ("forall" ,(math "\\forall"))
+     ("partial" ,(math "\\partial"))
+     ("exists" ,(math "\\exists"))
+     ("emptyset" ,(math "\\emptyset"))
+     ("infinity" ,(math "\\infty"))
+     ("nabla" ,(math "\\nabla"))
+     ("in" ,(math "\\in"))
+     ("notin" ,(math "\\notin"))
+     ("ni" ,(math "\\ni"))
+     ("prod" ,(math "\\Pi"))
+     ("sum" ,(math "\\Sigma"))
+     ("asterisk" ,(math "\\ast"))
+     ("sqrt" ,(math "\\surd"))
+     ("propto" ,(math "\\propto"))
+     ("angle" ,(math "\\angle"))
+     ("and" ,(math "\\wedge"))
+     ("or" ,(math "\\vee"))
+     ("cap" ,(math "\\cap"))
+     ("cup" ,(math "\\cup"))
+     ("integral" ,(math "\\int"))
+     ("models" ,(math "\\models"))
+     ("vdash" ,(math "\\vdash"))
+     ("dashv" ,(math "\\dashv"))
+     ("sim" ,(math "\\sim"))
+     ("cong" ,(math "\\cong"))
+     ("approx" ,(math "\\approx"))
+     ("neq" ,(math "\\neq"))
+     ("equiv" ,(math "\\equiv"))
+     ("le" ,(math "\\leq"))
+     ("ge" ,(math "\\geq"))
+     ("subset" ,(math "\\subset"))
+     ("supset" ,(math "\\supset"))
+     ("subseteq" ,(math "\\subseteq"))
+     ("supseteq" ,(math "\\supseteq"))
+     ("oplus" ,(math "\\oplus"))
+     ("otimes" ,(math "\\otimes"))
+     ("perp" ,(math "\\perp"))
+     ("mid" ,(math "\\mid"))
+     ("lceil" ,(math "\\lceil"))
+     ("rceil" ,(math "\\rceil"))
+     ("lfloor" ,(math "\\lfloor"))
+     ("rfloor" ,(math "\\rfloor"))
+     ("langle" ,(math "\\langle"))
+     ("rangle" ,(math "\\rangle"))
+     ;; Misc
+     ("loz" ,(math "\\diamond"))
+     ("spades" ,(math "\\spadesuit"))
+     ("clubs" ,(math "\\clubsuit"))
+     ("hearts" ,(math "\\heartsuit"))
+     ("diams" ,(math "\\diamondsuit"))
+     ("euro" "\\euro{}")
+     ;; LaTeX
+     ("dag" "\\dag")
+     ("ddag" "\\ddag")
+     ("circ" ,(math "\\circ"))
+     ("top" ,(math "\\top"))
+     ("bottom" ,(math "\\bot"))
+     ("lhd" ,(math "\\triangleleft"))
+     ("rhd" ,(math "\\triangleright"))
+     ("parallel" ,(math "\\parallel"))))
+
+;*---------------------------------------------------------------------*/
+;*    latex-engine ...                                                 */
+;*---------------------------------------------------------------------*/
+(define latex-engine
+   (default-engine-set!
+      (make-engine 'latex
+	 :version 1.0
+	 :format "latex"
+	 :delegate (find-engine 'base)
+	 :filter (make-string-replace latex-encoding)
+	 :custom '((documentclass "\\documentclass{article}")
+		   (usepackage "\\usepackage{epsfig}\n")
+		   (predocument "\\newdimen\\oldframetabcolsep\n\\newdimen\\oldcolortabcolsep\n\\newdimen\\oldpretabcolsep\n")
+		   (postdocument #f)
+		   (maketitle "\\date{}\n\\maketitle")
+		   (%font-size 0)
+		   ;; color
+		   (color #t)
+		   (color-usepackage "\\usepackage{color}\n")
+		   ;; hyperref
+		   (hyperref #t)
+		   (hyperref-usepackage "\\usepackage[setpagesize=false]{hyperref}\n")
+		   ;; source fontification
+		   (source-color #t)
+		   (source-comment-color "#ffa600")
+		   (source-error-color "red")
+		   (source-define-color "#6959cf")
+		   (source-module-color "#1919af")
+		   (source-markup-color "#1919af")
+		   (source-thread-color "#ad4386")
+		   (source-string-color "red")
+		   (source-bracket-color "red")
+		   (source-type-color "#00cf00")
+		   (image-format ("eps"))
+		   (index-page-ref #t))
+	 :symbol-table (latex-symbol-table 
+			(lambda (m)
+			   (format "\\begin{math}~a\\end{math}" m))))))
+
+;*---------------------------------------------------------------------*/
+;*    latex-title-engine ...                                           */
+;*---------------------------------------------------------------------*/
+(define latex-title-engine
+   (make-engine 'latex-title
+      :version 1.0
+      :format "latex-title"
+      :delegate latex-engine
+      :filter (make-string-replace latex-encoding)
+      :symbol-table (latex-symbol-table (lambda (m) (format "$~a$" m)))))
+
+;*---------------------------------------------------------------------*/
+;*    latex-color? ...                                                 */
+;*---------------------------------------------------------------------*/
+(define (latex-color? e)
+   (engine-custom e 'color))
+
+;*---------------------------------------------------------------------*/
+;*    LaTeX ...                                                        */
+;*---------------------------------------------------------------------*/
+(define-markup (LaTeX #!key (space #t))
+   (if (engine-format? "latex")
+       (! (if space "\\LaTeX\\ " "\\LaTeX"))
+       "LaTeX"))
+
+;*---------------------------------------------------------------------*/
+;*    TeX ...                                                          */
+;*---------------------------------------------------------------------*/
+(define-markup (TeX #!key (space #t))
+   (if (engine-format? "latex")
+       (! (if space "\\TeX\\ " "\\TeX"))
+       "TeX"))
+
+;*---------------------------------------------------------------------*/
+;*    latex ...                                                        */
+;*---------------------------------------------------------------------*/
+(define-markup (!latex fmt #!rest opt)
+   (if (engine-format? "latex")
+       (apply ! fmt opt)
+       #f))
+   
+;*---------------------------------------------------------------------*/
+;*    latex-width ...                                                  */
+;*---------------------------------------------------------------------*/
+(define (latex-width width)
+   (if (and (number? width) (inexact? width))
+       (string-append (number->string (/ width 100.)) "\\linewidth")
+       (string-append (number->string width) "pt")))
+
+;*---------------------------------------------------------------------*/
+;*    latex-font-size ...                                              */
+;*---------------------------------------------------------------------*/
+(define (latex-font-size size)
+   (case size
+      ((4) "Huge")
+      ((3) "huge")
+      ((2) "Large")
+      ((1) "large")
+      ((0) "normalsize")
+      ((-1) "small")
+      ((-2) "footnotesize")
+      ((-3) "scriptsize")
+      ((-4) "tiny")
+      (else (if (number? size)
+		(if (< size 0) "tiny" "Huge")
+		"normalsize"))))
+
+;*---------------------------------------------------------------------*/
+;*    *skribe-latex-color-table* ...                                   */
+;*---------------------------------------------------------------------*/
+(define *skribe-latex-color-table* #f)
+
+;*---------------------------------------------------------------------*/
+;*    latex-declare-color ...                                          */
+;*---------------------------------------------------------------------*/
+(define (latex-declare-color name rgb)
+   (printf "\\definecolor{~a}{rgb}{~a}\n" name rgb))
+
+;*---------------------------------------------------------------------*/
+;*    skribe-get-latex-color ...                                       */
+;*---------------------------------------------------------------------*/
+(define (skribe-get-latex-color spec)
+   (let ((c (and (hashtable? *skribe-latex-color-table*)
+		 (hashtable-get *skribe-latex-color-table* spec))))
+      (if (not (string? c))
+	  (skribe-error 'latex "Can't find color" spec)
+	  c)))
+
+;*---------------------------------------------------------------------*/
+;*    skribe-color->latex-rgb ...                                      */
+;*---------------------------------------------------------------------*/
+(define (skribe-color->latex-rgb spec)
+   (receive (r g b)
+      (skribe-color->rgb spec)
+      (cond
+	 ((and (= r 0) (= g 0) (= b 0))
+	  "0.,0.,0.")
+	 ((and (= r #xff) (= g #xff) (= b #xff))
+	  "1.,1.,1.")
+	 (else
+	  (let ((ff (exact->inexact #xff)))
+	    (format "~a,~a,~a"
+		    (number->string (/ r ff))
+		    (number->string (/ g ff))
+		    (number->string (/ b ff))))))))
+
+;*---------------------------------------------------------------------*/
+;*    skribe-latex-declare-colors ...                                  */
+;*---------------------------------------------------------------------*/
+(define (skribe-latex-declare-colors colors)
+   (set! *skribe-latex-color-table* (make-hashtable))
+   (for-each (lambda (spec)
+		(let ((old (hashtable-get *skribe-latex-color-table* spec)))
+		   (if (not (string? old))
+		       (let ((name (symbol->string (gensym 'c))))
+			  ;; bind the color 
+			  (hashtable-put! *skribe-latex-color-table* spec name)
+			  ;; and emit a latex declaration
+			  (latex-declare-color 
+			   name 
+			   (skribe-color->latex-rgb spec))))))
+	     colors))
+
+;*---------------------------------------------------------------------*/
+;*    &~ ...                                                           */
+;*---------------------------------------------------------------------*/
+(markup-writer '&~
+   :before "~"
+   :action #f)
+
+;*---------------------------------------------------------------------*/
+;*    &latex-table-start                                               */
+;*---------------------------------------------------------------------*/
+(markup-writer '&latex-table-start
+   :options '()
+   :action (lambda (n e)
+	      (let ((width (markup-option n 'width)))
+		 (if (number? width)
+		     (printf "\\begin{tabular*}{~a}" (latex-width width))
+		     (display "\\begin{tabular}")))))
+
+;*---------------------------------------------------------------------*/
+;*    &latex-table-stop                                                */
+;*---------------------------------------------------------------------*/
+(markup-writer '&latex-table-stop
+   :options '()
+   :action (lambda (n e)
+	      (let ((width (markup-option n 'width)))
+		 (if (number? width)
+		 (display "\\end{tabular*}\n")
+		 (display "\\end{tabular}\n")))))
+   
+;*---------------------------------------------------------------------*/
+;*    document ...                                                     */
+;*---------------------------------------------------------------------*/
+(markup-writer 'document
+   :options '(:title :author :ending :env)
+   :before (lambda (n e)
+	      ;; documentclass
+	      (let ((dc (engine-custom e 'documentclass)))
+		 (if dc
+		     (begin (display dc) (newline))
+		     (display "\\documentclass{article}\n")))
+	      (if (latex-color? e)
+		  (display (engine-custom e 'color-usepackage)))
+	      (if (engine-custom e 'hyperref)
+		  (display (engine-custom e 'hyperref-usepackage)))
+	      ;; usepackage
+	      (let ((pa (engine-custom e 'usepackage)))
+		 (if pa (begin (display pa) (newline))))
+	      ;; colors
+	      (if (latex-color? e)
+		  (begin
+		     (skribe-use-color! (engine-custom e 'source-comment-color))
+		     (skribe-use-color! (engine-custom e 'source-define-color))
+		     (skribe-use-color! (engine-custom e 'source-module-color))
+		     (skribe-use-color! (engine-custom e 'source-markup-color))
+		     (skribe-use-color! (engine-custom e 'source-thread-color))
+		     (skribe-use-color! (engine-custom e 'source-string-color))
+		     (skribe-use-color! (engine-custom e 'source-bracket-color))
+		     (skribe-use-color! (engine-custom e 'source-type-color))
+		     (display "\n%% colors\n")
+		     (skribe-latex-declare-colors (skribe-get-used-colors))
+		     (display "\n\n")))
+	      ;; predocument
+	      (let ((pd (engine-custom e 'predocument)))
+		 (when pd (display pd) (newline)))
+	      ;; title
+	      (let ((t (markup-option n :title)))
+		 (when t
+		    (skribe-eval (new markup
+				    (markup '&latex-title)
+				    (body t))
+				 e
+				 :env `((parent ,n)))))
+	      ;; author
+	      (let ((a (markup-option n :author)))
+		 (when a
+		    (skribe-eval (new markup
+				    (markup '&latex-author)
+				    (body a))
+				 e
+				 :env `((parent ,n)))))
+	      ;; document
+	      (display "\\begin{document}\n")
+	      ;; postdocument
+	      (let ((pd (engine-custom e 'postdocument)))
+		 (if pd (begin (display pd) (newline))))
+	      ;; maketitle
+	      (let ((mt (engine-custom e 'maketitle)))
+		 (if mt (begin (display mt) (newline)))))
+   :action (lambda (n e)
+	      (output (markup-body n) e))
+   :after (lambda (n e)
+	     (display "\n\\end{document}\n")))
+
+;*---------------------------------------------------------------------*/
+;*    &latex-title ...                                                 */
+;*---------------------------------------------------------------------*/
+(markup-writer '&latex-title
+   :before "\\title{"
+   :after "}\n")
+
+;*---------------------------------------------------------------------*/
+;*    &latex-author ...                                                */
+;*---------------------------------------------------------------------*/
+(markup-writer '&latex-author
+   :before "\\author{\\centerline{\n"
+   :action (lambda (n e)
+	      (let ((body (markup-body n)))
+		 (if (pair? body)
+		     (begin
+			(output (new markup
+				   (markup '&latex-table-start)
+				   (class "&latex-author-table"))
+				e)
+			(printf "{~a}\n" (make-string (length body) #\c))
+			(let loop ((as body))
+			   (output (car as) e)
+			   (if (pair? (cdr as))
+			       (begin
+				  (display " & ")
+				  (loop (cdr as)))))
+			(display "\\\\\n")
+			(output (new markup
+				   (markup '&latex-table-stop)
+				   (class "&latex-author-table"))
+				e))
+		     (output body e))))
+   :after "}}\n")
+		 
+;*---------------------------------------------------------------------*/
+;*    author ...                                                       */
+;*---------------------------------------------------------------------*/
+(markup-writer 'author
+   :options '(:name :title :affiliation :email :url :address :phone :photo :align)
+   :before (lambda (n e)
+	      (output (new markup
+			 (markup '&latex-table-start)
+			 (class "author"))
+		      e)
+	      (printf "{~a}\n"
+		      (case (markup-option n :align)
+			 ((left) "l")
+			 ((right) "r")
+			 (else "c"))))
+   :action (lambda (n e)
+	      (let ((name (markup-option n :name))
+		    (title (markup-option n :title))
+		    (affiliation (markup-option n :affiliation))
+		    (email (markup-option n :email))
+		    (url (markup-option n :url))
+		    (address (markup-option n :address))
+		    (phone (markup-option n :phone)))
+		 (define (row n)
+		    (output n e)
+		    (display "\\\\\n"))
+		 ;; name
+		 (if name (row name))
+		 ;; title
+		 (if title (row title))
+		 ;; affiliation
+		 (if affiliation (row affiliation))
+		 ;; address
+		 (cond
+		    ((pair? address)
+		     (for-each row address))
+		    ((string? address)
+		     (row address)))
+		 ;; telephone
+		 (if phone (row phone))
+		 ;; email
+		 (if email (row email))
+		 ;; url
+		 (if url (row url))))
+   :after (lambda (n e)
+	     (output (new markup
+			(markup '&latex-table-stop)
+			(class "author"))
+		     e)))
+
+;*---------------------------------------------------------------------*/
+;*    author ...                                                       */
+;*---------------------------------------------------------------------*/
+(markup-writer 'author
+   :options '(:name :title :affiliation :email :url :address :phone :photo :align)
+   :predicate (lambda (n e) (markup-option n :photo))
+   :before (lambda (n e)
+	      (output (new markup
+			 (markup '&latex-table-start)
+			 (class "author"))
+		      e)
+	      (printf "{cc}\n"))
+   :action (lambda (n e)
+	      (let ((photo (markup-option n :photo)))
+		 (output photo e)
+		 (display " & ")
+		 (markup-option-add! n :photo #f)
+		 (output n e)
+		 (markup-option-add! n :photo photo)
+		 (display "\\\\\n")))
+   :after (lambda (n e)
+	     (output (new markup
+			(markup '&latex-table-stop)
+			(class "author"))
+		     e)))
+
+;*---------------------------------------------------------------------*/
+;*    toc ...                                                          */
+;*---------------------------------------------------------------------*/
+(markup-writer 'toc
+   :options '()
+   :action (lambda (n e) (display "\\tableofcontents\n")))
+
+;*---------------------------------------------------------------------*/
+;*    latex-block-before ...                                           */
+;*---------------------------------------------------------------------*/
+(define (latex-block-before m)
+   (lambda (n e)
+      (let ((num (markup-option n :number)))
+	 (printf "\n\n%% ~a\n" (string-canonicalize (markup-ident n)))
+	 (printf "\\~a~a{" m (if (not num) "*" ""))
+	 (output (markup-option n :title) latex-title-engine)
+	 (display "}\n")
+	 (when num
+	    (printf "\\label{~a}\n" (string-canonicalize (markup-ident n)))))))
+
+;*---------------------------------------------------------------------*/
+;*    section ... .. @label chapter@                                   */
+;*---------------------------------------------------------------------*/
+(markup-writer 'chapter
+   :options '(:title :number :toc :file :env)
+   :before (latex-block-before 'chapter))
+
+;*---------------------------------------------------------------------*/
+;*    section ... . @label section@                                    */
+;*---------------------------------------------------------------------*/
+(markup-writer 'section
+   :options '(:title :number :toc :file :env)
+   :before (latex-block-before 'section))
+
+;*---------------------------------------------------------------------*/
+;*    subsection ... @label subsection@                                */
+;*---------------------------------------------------------------------*/
+(markup-writer 'subsection
+   :options '(:title :number :toc :file :env)
+   :before (latex-block-before 'subsection))
+
+;*---------------------------------------------------------------------*/
+;*    subsubsection ... @label subsubsection@                          */
+;*---------------------------------------------------------------------*/
+(markup-writer 'subsubsection
+   :options '(:title :number :toc :file :env)
+   :before (latex-block-before 'subsubsection))
+
+;*---------------------------------------------------------------------*/
+;*    paragraph ...                                                    */
+;*---------------------------------------------------------------------*/
+(markup-writer 'paragraph
+   :options '(:title :number :toc :env)
+   :before (lambda (n e)
+	      (when (and (>= (skribe-debug) 2) (location? (ast-loc n)))
+		 (printf "\n\\makebox[\\linewidth][l]{\\hspace{-1.5cm}\\footnotesize{$\\triangleright$\\textit{~a}}}\n" 
+			 (ast-location n)))
+	      (display "\\noindent "))
+   :after "\\par\n")
+
+;*---------------------------------------------------------------------*/
+;*    footnote ...                                                     */
+;*---------------------------------------------------------------------*/
+(markup-writer 'footnote
+   :before "\\footnote{"
+   :after "}")
+
+;*---------------------------------------------------------------------*/
+;*    linebreak ...                                                    */
+;*---------------------------------------------------------------------*/
+(markup-writer 'linebreak
+   :action (lambda (n e)
+	      (display "\\makebox[\\linewidth]{}")))
+
+;*---------------------------------------------------------------------*/
+;*    hrule ...                                                        */
+;*---------------------------------------------------------------------*/
+(markup-writer 'hrule 
+   :options '()
+   :before "\\hrulefill"
+   :action #f)
+
+;*---------------------------------------------------------------------*/
+;*    latex-color-counter                                              */
+;*---------------------------------------------------------------------*/
+(define latex-color-counter 1)
+
+;*---------------------------------------------------------------------*/
+;*    latex-color ...                                                  */
+;*---------------------------------------------------------------------*/
+(define latex-color 
+   (lambda (bg fg n e)
+      (if (not (latex-color? e))
+	  (output n e)
+	  (begin
+	     (if bg
+		 (printf "\\setbox~a \\vbox \\bgroup " latex-color-counter))
+	     (set! latex-color-counter (+ latex-color-counter 1))
+	     (if fg
+		 (begin
+		    (printf "\\textcolor{~a}{" (skribe-get-latex-color fg))
+		    (output n e)
+		    (display "}"))
+		 (output n e))
+	     (set! latex-color-counter (- latex-color-counter 1))
+	     (if bg
+		 (printf "\\egroup\\colorbox{~a}{\\box~a}%\n"
+			 (skribe-get-latex-color bg) latex-color-counter))))))
+   
+;*---------------------------------------------------------------------*/
+;*    color ...                                                        */
+;*---------------------------------------------------------------------*/
+(markup-writer 'color
+   :options '(:bg :fg :width)
+   :action (lambda (n e) 
+	      (let* ((w (markup-option n :width))
+		     (bg (markup-option n :bg))
+		     (fg (markup-option n :fg))
+		     (m (markup-option n :margin))
+		     (tw (cond
+			    ((not w)
+			     #f)
+			    ((and (integer? w) (exact? w))
+			     w)
+			    ((real? w)
+			     (latex-width w)))))
+		 (when bg 
+		    (display "\\setlength{\\oldcolortabcolsep}{\\tabcolsep}\n\\addtolength{\\tabcolsep}{-\\tabcolsep}\n")
+		    (when m
+		       (printf "\\addtolength{\\tabcolsep}{~a}" 
+			       (latex-width m)))
+		    (output (new markup
+			       (markup '&latex-table-start)
+			       (class "color"))
+			    e)
+		    (if tw
+			(printf "{p{~a}}\n" tw)
+			(printf "{l}\n")))
+		 (latex-color bg fg (markup-body n) e)
+		 (when bg 
+		    (output (new markup
+			       (markup '&latex-table-stop)
+			       (class "color"))
+			    e)
+		    (display "\\setlength{\\tabcolsep}{\\oldcolortabcolsep}\n")))))
+
+;*---------------------------------------------------------------------*/
+;*    frame ...                                                        */
+;*---------------------------------------------------------------------*/
+(markup-writer 'frame
+   :options '(:width :border :margin)
+   :before (lambda (n e)
+	      (display "\\setlength{\\oldframetabcolsep}{\\tabcolsep}\n\\addtolength{\\tabcolsep}{-\\tabcolsep}")
+	      (let ((m (markup-option n :margin)))
+		 (when m
+		    (printf "\\addtolength{\\tabcolsep}{~a}" (latex-width m))))
+	      (newline))
+   :action (lambda (n e) 
+	      (let* ((b (markup-option n :border))
+		     (w (markup-option n :width))
+		     (tw (cond
+			    ((not w)
+			     ".96\\linewidth")
+			    ((and (integer? w) (exact? w))
+			     w)
+			    ((real? w)
+			     (latex-width w)))))
+		 (output (new markup
+			    (markup '&latex-table-start)
+			    (class "frame"))
+			 e)
+		 (if (and (integer? b) (> b 0))
+		     (begin
+			(printf "{|p{~a}|}\\hline\n" tw)
+			(output (markup-body n) e)
+			(display "\\\\\\hline\n"))
+		     (begin
+			(printf "{p{~a}}\n" tw)
+			(output (markup-body n) e)))
+		 (output (new markup
+			    (markup '&latex-table-stop)
+			    (class "author"))
+			 e)))
+   :after "\\setlength{\\tabcolsep}{\\oldframetabcolsep}\n")
+
+;*---------------------------------------------------------------------*/
+;*    font ...                                                         */
+;*---------------------------------------------------------------------*/
+(markup-writer 'font
+   :options '(:size)
+   :action (lambda (n e) 
+	      (let* ((size (markup-option n :size))
+		     (cs (let ((n (engine-custom e '%font-size)))
+			    (if (number? n)
+				n 
+				0)))
+		     (ns (cond
+			    ((and (integer? size) (exact? size))
+			     (if (> size 0)
+				 size
+				 (+ cs size)))
+			    ((and (number? size) (inexact? size))
+			     (+ cs (inexact->exact size)))
+			    ((string? size)
+			     (let ((nb (string->number size)))
+				(if (not (number? nb))
+				    (skribe-error 
+				     'font
+				     (format "Illegal font size ~s" size)
+				     nb)
+				    (+ cs nb))))))
+		     (ne (make-engine (gensym 'latex)
+				      :delegate e
+				      :filter (engine-filter e)
+				      :symbol-table (engine-symbol-table e)
+				      :custom `((%font-size ,ns)
+						,@(engine-customs e)))))
+		 (printf "{\\~a{" (latex-font-size ns))
+		 (output (markup-body n) ne)
+		 (display "}}"))))
+
+;*---------------------------------------------------------------------*/
+;*    flush ...                                                        */
+;*---------------------------------------------------------------------*/
+(markup-writer 'flush
+   :options '(:side)
+   :before (lambda (n e)
+	      (case (markup-option n :side)
+		 ((center)
+		  (display "\\begin{center}\n"))
+		 ((left)
+		  (display "\\begin{flushleft}"))
+		 ((right)
+		  (display "\\begin{flushright}"))))
+   :after (lambda (n e)
+	     (case (markup-option n :side)
+		((center)
+		 (display "\\end{center}\n"))
+		((left)
+		 (display "\\end{flushleft}\n"))
+		((right)
+		 (display "\\end{flushright}\n")))))
+
+;*---------------------------------------------------------------------*/
+;*    center ...                                                       */
+;*---------------------------------------------------------------------*/
+(markup-writer 'center
+   :before "\\begin{center}\n"
+   :after "\\end{center}\n")
+
+;*---------------------------------------------------------------------*/
+;*    pre ...                                                          */
+;*---------------------------------------------------------------------*/
+(markup-writer 'pre
+   :before (lambda (n e)
+	      (printf "\\setlength{\\oldpretabcolsep}{\\tabcolsep}\n\\addtolength{\\tabcolsep}{-\\tabcolsep}\n{\\setbox~a \\vbox \n\\bgroup\n{\\noindent \\texttt{"
+		      latex-color-counter)
+	      (output (new markup
+			 (markup '&latex-table-start)
+			 (class "pre"))
+		      e)
+	      (display "{l}\n")
+	      (set! latex-color-counter (+ latex-color-counter 1)))
+   :action (lambda (n e)
+	      (let ((ne (make-engine
+			   (gensym 'latex)
+			   :delegate e
+			   :filter (make-string-replace latex-pre-encoding)
+			   :symbol-table (engine-symbol-table e)
+			   :custom (engine-customs e))))
+		 (output (markup-body n) ne)))
+   :after (lambda (n e)
+	     (set! latex-color-counter (- latex-color-counter 1))
+	     (output (new markup
+			(markup '&latex-table-stop)
+			(class "pre"))
+		     e)
+	     (printf "}}\n\\egroup{\\box~a}}%\n\\setlength{\\tabcolsep}{\\oldpretabcolsep}\n" latex-color-counter)))
+
+;*---------------------------------------------------------------------*/
+;*    prog ...                                                         */
+;*---------------------------------------------------------------------*/
+(markup-writer 'prog
+   :options '(:line :mark)
+   :before (lambda (n e)
+	      (printf "\\setlength{\\oldpretabcolsep}{\\tabcolsep}\n\\addtolength{\\tabcolsep}{-\\tabcolsep}\n{\\setbox~a \\vbox \\bgroup\n{\\noindent \\texttt{"
+		      latex-color-counter)
+	      (output (new markup
+			 (markup '&latex-table-start)
+			 (class "pre"))
+		      e)
+	      (display "{l}\n")
+	      (set! latex-color-counter (+ latex-color-counter 1)))
+   :action (lambda (n e)
+	      (let ((ne (make-engine
+			   (gensym 'latex)
+			   :delegate e
+			   :filter (make-string-replace latex-pre-encoding)
+			   :symbol-table (engine-symbol-table e)
+			   :custom (engine-customs e))))
+		 (output (markup-body n) ne)))
+   :after (lambda (n e)
+	     (set! latex-color-counter (- latex-color-counter 1))
+	     (output (new markup
+			(markup '&latex-table-stop)
+			(class "prog"))
+		     e)
+	     (printf "}}\n\\egroup{\\box~a}}%\n\\setlength{\\tabcolsep}{\\oldpretabcolsep}\n" latex-color-counter)))
+
+;*---------------------------------------------------------------------*/
+;*    &prog-line ...                                                   */
+;*---------------------------------------------------------------------*/
+(markup-writer '&prog-line
+   :before (lambda (n e)
+	      (let ((n (markup-ident n)))
+		 (if n (skribe-eval (it (list n) ": ") e))))
+   :after "\\\\\n")
+
+;*---------------------------------------------------------------------*/
+;*    itemize ...                                                      */
+;*---------------------------------------------------------------------*/
+(markup-writer 'itemize
+   :options '(:symbol)	       
+   :before "\\begin{itemize}\n"
+   :action (lambda (n e)
+	      (for-each (lambda (item)
+			   (display " \\item ")
+			   (output item e)
+			   (newline))
+			(markup-body n)))
+   :after "\\end{itemize} ")
+
+(markup-writer 'itemize
+   :predicate (lambda (n e) (markup-option n :symbol))
+   :options '(:symbol)	       
+   :before (lambda (n e)
+	      (display "\\begin{list}{")
+	      (output (markup-option n :symbol) e)
+	      (display "}{}")
+	      (newline))
+   :action (lambda (n e)
+	      (for-each (lambda (item)
+			   (display " \\item ")
+			   (output item e)
+			   (newline))
+			(markup-body n)))
+   :after "\\end{list}\n")
+
+;*---------------------------------------------------------------------*/
+;*    enumerate ...                                                    */
+;*---------------------------------------------------------------------*/
+(markup-writer 'enumerate
+   :options '(:symbol)	       
+   :before "\\begin{enumerate}\n"
+   :action (lambda (n e)
+	      (for-each (lambda (item)
+			   (display " \\item ")
+			   (output item e)
+			   (newline))
+			(markup-body n)))
+   :after "\\end{enumerate}\n")
+
+;*---------------------------------------------------------------------*/
+;*    description ...                                                  */
+;*---------------------------------------------------------------------*/
+(markup-writer 'description
+   :options '(:symbol)	       
+   :before "\\begin{description}\n"
+   :action (lambda (n e)
+	      (for-each (lambda (item)
+			   (let ((k (markup-option item :key)))
+			      (for-each (lambda (i)
+					   (display " \\item[")
+					   (output i e)
+					   (display "]\n"))
+					(if (pair? k) k (list k)))
+			      (output (markup-body item) e)))
+			(markup-body n)))
+   :after "\\end{description}\n")
+
+;*---------------------------------------------------------------------*/
+;*    item ...                                                         */
+;*---------------------------------------------------------------------*/
+(markup-writer 'item
+   :options '(:key)	       
+   :action (lambda (n e)
+	      (let ((k (markup-option n :key)))
+		 (if k
+		     (begin
+			(display "[")
+			(output k e)
+			(display "] "))))
+	      (output (markup-body n) e)))
+
+;*---------------------------------------------------------------------*/
+;*    blockquote ...                                                   */
+;*---------------------------------------------------------------------*/
+(markup-writer 'blockquote
+   :before "\n\\begin{quote}\n"
+   :after  "\n\\end{quote}")
+
+;*---------------------------------------------------------------------*/
+;*    figure ... @label figure@                                        */
+;*---------------------------------------------------------------------*/
+(markup-writer 'figure
+   :options '(:legend :number :multicolumns)
+   :action (lambda (n e)
+	      (let ((ident (markup-ident n))
+		    (number (markup-option n :number))
+		    (legend (markup-option n :legend))
+		    (mc (markup-option n :multicolumns)))
+		 (display (if mc
+			      "\\begin{figure*}[!th]\n"
+			      "\\begin{figure}[ht]\n"))
+		 (output (markup-body n) e)
+		 (printf "\\caption{\\label{~a}" (string-canonicalize ident))
+		 (output legend e)
+		 (display (if mc
+			      "}\\end{figure*}\n"
+			      "}\\end{figure}\n")))))
+
+;*---------------------------------------------------------------------*/
+;*    table-column-number ...                                          */
+;*    -------------------------------------------------------------    */
+;*    Computes how many columns are contained in a table.              */
+;*---------------------------------------------------------------------*/
+(define (table-column-number t)
+   (define (row-columns row)
+      (let luup ((cells (markup-body row))
+		 (nbcols 0))
+	 (cond
+	   ((null? cells)
+	     nbcols)
+	   ((pair? cells)
+	    (luup (cdr cells)
+		  (+ nbcols (markup-option (car cells) :colspan))))
+	   (else
+	    (skribe-type-error 'tr "Illegal tr body, " row "pair")))))
+   (let loop ((rows (markup-body t))
+	      (nbcols 0))
+      (if (null? rows)
+	  nbcols
+	  (loop (cdr rows)
+		(max (row-columns (car rows)) nbcols)))))
+
+;*---------------------------------------------------------------------*/
+;*    table ...                                                        */
+;*---------------------------------------------------------------------*/
+(markup-writer 'table
+   :options '(:width :frame :rules :cellstyle)
+   :before (lambda (n e)
+	      (let ((width (markup-option n :width))
+		    (frame (markup-option n :frame))
+		    (rules (markup-option n :rules))
+		    (cstyle (markup-option n :cellstyle))
+		    (nbcols (table-column-number n))
+		    (id (markup-ident n))
+		    (cla (markup-class n))
+		    (rows (markup-body n)))
+		 ;; the table header
+		 (output (new markup
+			    (markup '&latex-table-start)
+			    (class "table")
+			    (options `((width ,width))))
+			 e)
+		 ;; store the actual number of columns
+		 (markup-option-add! n '&nbcols nbcols)
+		 ;; compute the table header
+		 (let ((cols (cond
+				((= nbcols 0)
+				 (skribe-error 'table
+					       "Illegal empty table"
+					       n))
+				((or (not width) (= nbcols 1))
+				 (make-string nbcols #\c))
+				(else
+				 (let ((v (make-vector 
+					   (- nbcols 1)
+					   "@{\\extracolsep{\\fill}}c")))
+				    (apply string-append
+					   (cons "c" (vector->list v))))))))
+		    (case frame
+		       ((none)
+			(printf "{~a}\n" cols))
+		       ((border box)
+			(printf "{|~a|}" cols)
+			(markup-option-add! n '&lhs #t)
+			(markup-option-add! n '&rhs #t)
+			(output (new markup
+				   (markup '&latex-table-hline)
+				   (parent n)
+				   (ident (format "~a-above" id))
+				   (class "table-line-above"))
+				e))
+		       ((above hsides)
+			(printf "{~a}" cols)
+			(output (new markup
+				   (markup '&latex-table-hline)
+				   (parent n)
+				   (ident (format "~a-above" id))
+				   (class "table-line-above"))
+				e))
+		       ((vsides)
+			(markup-option-add! n '&lhs #t)
+			(markup-option-add! n '&rhs #t)
+			(printf "{|~a|}\n" cols))
+		       ((lhs)
+			(markup-option-add! n '&lhs #t)
+			(printf "{|~a}\n" cols))
+		       ((rhs)
+			(markup-option-add! n '&rhs #t)
+			(printf "{~a|}\n" cols))
+		       (else
+			(printf "{~a}\n" cols)))
+		    ;; mark each row with appropriate '&tl (top-line)
+		    ;; and &bl (bottom-line) options
+		    (when (pair? rows)
+		       (if (and (memq rules '(rows all))
+				(or (not (eq? cstyle 'collapse))
+				    (not (memq frame '(border box above hsides)))))
+			   (let ((frow (car rows)))
+			      (if (is-markup? frow 'tr)
+				  (markup-option-add! frow '&tl #t))))
+		       (if (eq? rules 'header)
+			   (let ((frow (car rows)))
+			      (if (is-markup? frow 'tr)
+				  (markup-option-add! frow '&bl #t))))
+		       (when (and (pair? (cdr rows))
+				  (memq rules '(rows all)))
+			  (for-each (lambda (row)
+				       (if (is-markup? row 'tr)
+					   (markup-option-add! row '&bl #t)))
+				    rows)
+			  (markup-option-add! (car (last-pair rows)) '&bl #f))
+		       (if (and (memq rules '(rows all))
+				(or (not (eq? cstyle 'collapse))
+				    (not (memq frame '(border box above hsides)))))
+			   (let ((lrow (car (last-pair rows))))
+			      (if (is-markup? lrow 'tr)
+				  (markup-option-add! lrow '&bl #t))))))))
+   :after (lambda (n e)
+	     (case (markup-option n :frame)
+		((hsides below box border)
+		 (output (new markup
+			    (markup '&latex-table-hline)
+			    (parent n)
+			    (ident (format "~a-below" (markup-ident n)))
+			    (class "table-hline-below"))
+			 e)))
+	     (output (new markup
+			(markup '&latex-table-stop)
+			(class "table")
+			(options `((width ,(markup-option n :width)))))
+		     e)))
+
+;*---------------------------------------------------------------------*/
+;*    &latex-table-hline                                               */
+;*---------------------------------------------------------------------*/
+(markup-writer '&latex-table-hline
+   :action "\\hline\n")
+
+;*---------------------------------------------------------------------*/
+;*    tr ...                                                           */
+;*---------------------------------------------------------------------*/
+(markup-writer 'tr
+   :options '()
+   :action (lambda (n e)
+	      (let* ((parent (ast-parent n))
+		     (_ (if (not (is-markup? parent 'table))
+			    (skribe-type-error 'tr "Illegal parent, " parent
+					       "#<table>")))
+		     (nbcols (markup-option parent '&nbcols))
+		     (lhs (markup-option parent '&lhs))
+		     (rhs (markup-option parent '&rhs))
+		     (rules (markup-option parent :rules))
+		     (collapse (eq? (markup-option parent :cellstyle) 
+				    'collapse))
+		     (vrules (memq rules '(cols all)))
+		     (cells (markup-body n)))
+		 (if (markup-option n '&tl)
+		     (output (new markup
+				(markup '&latex-table-hline)
+				(parent n)
+				(ident (markup-ident n))
+				(class (markup-class n)))
+			     e))
+		 (if (> nbcols 0)
+		     (let laap ((nbc nbcols)
+				(cs cells))
+			(if (null? cs)
+			    (when (> nbc 1)
+			       (display " & ")
+			       (laap (- nbc 1) cs))
+			    (let* ((c (car cs))
+				   (nc (- nbc (markup-option c :colspan))))
+			       (when (= nbcols nbc)
+				  (cond
+				     ((and lhs vrules (not collapse))
+				      (markup-option-add! c '&lhs "||"))
+				     ((or lhs vrules)
+				      (markup-option-add! c '&lhs #\|))))
+			       (when (= nc 0)
+				  (cond
+				     ((and rhs vrules (not collapse))
+				      (markup-option-add! c '&rhs "||"))
+				     ((or rhs vrules)
+				      (markup-option-add! c '&rhs #\|))))
+			       (when (and vrules (> nc 0) (< nc nbcols))
+				  (markup-option-add! c '&rhs #\|))
+			       (output c e)
+			       (when (> nc 0)
+				  (display " & ")
+				  (laap nc (cdr cs)))))))))
+   :after (lambda (n e)
+	     (display "\\\\")
+	     (if (markup-option n '&bl)
+		 (output (new markup
+			    (markup '&latex-table-hline)
+			    (parent n)
+			    (ident (markup-ident n))
+			    (class (markup-class n)))
+			 e)
+		 (newline))))
+
+;*---------------------------------------------------------------------*/
+;*    tc                                                               */
+;*---------------------------------------------------------------------*/
+(markup-writer 'tc
+   :options '(:width :align :valign :colspan)
+   :action (lambda (n e)
+	      (let ((id (markup-ident n))
+		    (cla (markup-class n)))
+		 (let* ((o0 (markup-body n))
+			(o1 (if (eq? (markup-option n 'markup) 'th)
+				(new markup
+				   (markup '&latex-th)
+				   (parent n)
+				   (ident id)
+				   (class cla)
+				   (options (markup-options n))
+				   (body o0))
+				o0))
+			(o2 (if (markup-option n :width)
+				(new markup
+				   (markup '&latex-tc-parbox)
+				   (parent n)
+				   (ident id)
+				   (class cla)
+				   (options (markup-options n))
+				   (body o1))
+				o1))
+			(o3 (if (or (> (markup-option n :colspan) 1)
+				    (not (eq? (markup-option n :align) 
+					      'center))
+				    (markup-option n '&lhs)
+				    (markup-option n '&rhs))
+				(new markup
+				   (markup '&latex-tc-multicolumn)
+				   (parent n)
+				   (ident id)
+				   (class cla)
+				   (options (markup-options n))
+				   (body o2))
+				o2)))
+		    (output o3 e)))))
+
+;*---------------------------------------------------------------------*/
+;*    &latex-th ...                                                    */
+;*---------------------------------------------------------------------*/
+(markup-writer '&latex-th
+   :before "\\textsf{"
+   :after "}")
+
+;*---------------------------------------------------------------------*/
+;*    &latex-tc-parbox ...                                             */
+;*---------------------------------------------------------------------*/
+(markup-writer '&latex-tc-parbox
+   :before (lambda (n e)
+	      (let ((width (markup-option n :width))
+		    (valign (markup-option n :valign)))
+		 (printf "\\parbox{~a}{" (latex-width width))))
+   :after "}")
+		 
+;*---------------------------------------------------------------------*/
+;*    &latex-tc-multicolumn ...                                        */
+;*---------------------------------------------------------------------*/
+(markup-writer '&latex-tc-multicolumn
+   :before (lambda (n e)
+	      (let ((colspan (markup-option n :colspan))
+		    (lhs (or (markup-option n '&lhs) ""))
+		    (rhs (or (markup-option n '&rhs) ""))
+		    (align (case (markup-option n :align)
+			      ((left) #\l)
+			      ((center) #\c)
+			      ((right) #\r)
+			      (else #\c))))
+		 (printf "\\multicolumn{~a}{~a~a~a}{" colspan lhs align rhs)))
+   :after "}")
+
+;*---------------------------------------------------------------------*/
+;*    image ... @label image@                                          */
+;*---------------------------------------------------------------------*/
+(markup-writer 'image
+   :options '(:file :url :width :height :zoom)
+   :action (lambda (n e)
+	      (let* ((file (markup-option n :file))
+		     (url (markup-option n :url))
+		     (width (markup-option n :width))
+		     (height (markup-option n :height))
+		     (zoom (markup-option n :zoom))
+		     (body (markup-body n))
+		     (efmt (engine-custom e 'image-format))
+		     (img (or url (convert-image file 
+						 (if (list? efmt) 
+						     efmt
+						     '("eps"))))))
+		 (if (not (string? img))
+		     (skribe-error 'latex "Illegal image" file)
+		     (begin
+			(printf "\\epsfig{file=~a" (strip-ref-base img))
+			(if width (printf ", width=~a" (latex-width width)))
+			(if height (printf ", height=~apt" height))
+			(if zoom (printf ", zoom=\"~a\"" zoom))
+			(display "}"))))))
+
+;*---------------------------------------------------------------------*/
+;*    Ornaments ...                                                    */
+;*---------------------------------------------------------------------*/
+(markup-writer 'roman :before "{\\textrm{" :after "}}")
+(markup-writer 'bold :before "{\\textbf{" :after "}}")
+(markup-writer 'underline :before  "{\\underline{" :after "}}")
+(markup-writer 'emph :before "{\\em{" :after "}}")
+(markup-writer 'it :before "{\\textit{" :after "}}")
+(markup-writer 'code :before "{\\texttt{" :after "}}")
+(markup-writer 'var :before "{\\texttt{" :after "}}")
+(markup-writer 'sc :before "{\\sc{" :after "}}")
+(markup-writer 'sf :before "{\\sf{" :after "}}")
+(markup-writer 'sub :before "\\begin{math}\\sb{\\mbox{" :after "}}\\end{math}")
+(markup-writer 'sup :before "\\begin{math}\\sp{\\mbox{" :after "}}\\end{math}")
+
+(markup-writer 'tt
+   :before "{\\texttt{"
+   :action (lambda (n e)
+	      (let ((ne (make-engine
+			   (gensym 'latex)
+			   :delegate e
+			   :filter (make-string-replace latex-tt-encoding)
+			   :custom (engine-customs e)
+			   :symbol-table (engine-symbol-table e))))
+		 (output (markup-body n) ne)))
+   :after "}}")
+
+;*---------------------------------------------------------------------*/
+;*    q ... @label q@                                                  */
+;*---------------------------------------------------------------------*/
+(markup-writer 'q
+   :before "``"
+   :after "''")
+
+;*---------------------------------------------------------------------*/
+;*    mailto ... @label mailto@                                        */
+;*---------------------------------------------------------------------*/
+(markup-writer 'mailto
+   :options '(:text)
+   :before "{\\texttt{"
+   :action (lambda (n e)
+	      (let ((text (markup-option n :text)))
+		 (output (or text (markup-body n)) e)))
+   :after "}}")
+
+;*---------------------------------------------------------------------*/
+;*    mark ... @label mark@                                            */
+;*---------------------------------------------------------------------*/
+(markup-writer 'mark
+   :before (lambda (n e)
+	      (printf "\\label{~a}" (string-canonicalize (markup-ident n)))))
+
+;*---------------------------------------------------------------------*/
+;*    ref ... @label ref@                                              */
+;*---------------------------------------------------------------------*/
+(markup-writer 'ref
+   :options '(:text :chapter :section :subsection :subsubsection :figure :mark :handle :page)
+   :action (lambda (n e)
+	      (let ((t (markup-option n :text)))
+		 (if t
+		     (begin
+			(output t e)
+			(output "~" e (markup-writer-get '&~ e))))))
+   :after (lambda (n e)
+	     (let* ((c (handle-ast (markup-body n)))
+		    (id (markup-ident c)))
+		(if (markup-option n :page)
+		    (printf "\\begin{math}{\\pageref{~a}}\\end{math}" 
+			    (string-canonicalize id))
+		    (printf "\\ref{~a}" 
+			    (string-canonicalize id))))))
+
+;*---------------------------------------------------------------------*/
+;*    bib-ref ...                                                      */
+;*---------------------------------------------------------------------*/
+(markup-writer 'bib-ref
+   :options '(:text :bib)
+   :before "["
+   :action (lambda (n e)
+	      (output (markup-option (handle-ast (markup-body n)) :title) e))
+   :after "]")
+
+;*---------------------------------------------------------------------*/
+;*    bib-ref+ ...                                                     */
+;*---------------------------------------------------------------------*/
+(markup-writer 'bib-ref+
+   :options '(:text :bib)
+   :before "["
+   :action (lambda (n e) 
+	      (let loop ((rs (markup-body n)))
+		 (cond
+		    ((null? rs)
+		     #f)
+		    (else
+		     (if (is-markup? (car rs) 'bib-ref)
+			 (invoke (writer-action (markup-writer-get 'bib-ref e))
+				 (car rs)
+				 e)
+			 (output (car rs) e))
+		     (if (pair? (cdr rs))
+			 (begin
+			    (display ",")
+			    (loop (cdr rs))))))))
+   :after "]")
+
+;*---------------------------------------------------------------------*/
+;*    url-ref ...                                                      */
+;*---------------------------------------------------------------------*/
+(markup-writer 'url-ref
+   :options '(:url :text)
+   :action (lambda (n e) 
+	      (let ((text (markup-option n :text))
+		    (url (markup-option n :url)))
+		 (if (not text)
+		     (output url e)
+		     (output text e)))))
+
+;*---------------------------------------------------------------------*/
+;*    url-ref hyperref ...                                             */
+;*---------------------------------------------------------------------*/
+(markup-writer 'url-ref
+   :options '(:url :text)
+   :predicate (lambda (n e)
+		 (engine-custom e 'hyperref))
+   :action (lambda (n e) 
+	      (let ((body (markup-option n :text))
+		    (url (markup-option n :url)))
+		 (if (and body (not (equal? body url)))
+		     (begin
+			(display "\\href{")
+			(display url)
+			(display "}{")
+			(output body e)
+			(display "}"))
+		     (begin
+			(display "\\href{")
+			(display url)
+			(printf "}{~a}" url))))))
+
+;*---------------------------------------------------------------------*/
+;*    line-ref ...                                                     */
+;*---------------------------------------------------------------------*/
+(markup-writer 'line-ref
+   :options '(:offset)
+   :before "{\\textit{"
+   :action (lambda (n e)
+	      (let ((o (markup-option n :offset))
+		    (v (string->number (markup-option n :text))))
+		 (cond
+		    ((and (number? o) (number? v))
+		     (display (+ o v)))
+		    (else
+		     (display v)))))
+   :after "}}")
+
+;*---------------------------------------------------------------------*/
+;*    &the-bibliography ...                                            */
+;*---------------------------------------------------------------------*/
+(markup-writer '&the-bibliography
+   :before (lambda (n e)
+	      (display "{%
+\\sloppy
+\\sfcode`\\.=1000\\relax
+\\newdimen\\bibindent
+\\bibindent=0em
+\\begin{list}{}{%
+        \\settowidth\\labelwidth{[21]}%
+        \\leftmargin\\labelwidth
+        \\advance\\leftmargin\\labelsep
+        \\advance\\leftmargin\\bibindent
+        \\itemindent -\\bibindent
+        \\listparindent \\itemindent
+        \\itemsep 0pt
+    }%\n"))
+   :after (lambda (n e)
+	     (display "\n\\end{list}}\n")))
+
+;*---------------------------------------------------------------------*/
+;*    &bib-entry ...                                                   */
+;*---------------------------------------------------------------------*/
+(markup-writer '&bib-entry
+   :options '(:title)
+   :action (lambda (n e)
+	      (output n e (markup-writer-get '&bib-entry-label e))
+	      (output n e (markup-writer-get '&bib-entry-body e)))
+   :after "\n")
+
+;*---------------------------------------------------------------------*/
+;*    &bib-entry-title ...                                             */
+;*---------------------------------------------------------------------*/
+(markup-writer '&bib-entry-title
+   :predicate (lambda (n e)
+		 (engine-custom e 'hyperref))
+   :action (lambda (n e)
+	      (let* ((t (bold (markup-body n)))
+		     (en (handle-ast (ast-parent n)))
+		     (url (markup-option en 'url))
+		     (ht (if url (ref :url (markup-body url) :text t) t)))
+		 (skribe-eval ht e))))
+
+;*---------------------------------------------------------------------*/
+;*    &bib-entry-label ...                                             */
+;*---------------------------------------------------------------------*/
+(markup-writer '&bib-entry-label
+   :options '(:title)
+   :before "\\item[{\\char91}"
+   :action (lambda (n e) (output (markup-option n :title) e))
+   :after "{\\char93}] ")
+
+;*---------------------------------------------------------------------*/
+;*    &bib-entry-url ...                                               */
+;*---------------------------------------------------------------------*/
+(markup-writer '&bib-entry-url
+   :action (lambda (n e)
+	      (let* ((en (handle-ast (ast-parent n)))
+		     (url (markup-option en 'url))
+		     (t (bold (markup-body url))))
+		 (skribe-eval (ref :url (markup-body url) :text t) e))))
+
+;*---------------------------------------------------------------------*/
+;*    &source-comment ...                                              */
+;*---------------------------------------------------------------------*/
+(markup-writer '&source-comment
+   :action (lambda (n e)
+	      (let* ((cc (engine-custom e 'source-comment-color))
+		     (n1 (it (markup-body n)))
+		     (n2 (if (and (engine-custom e 'source-color) cc)
+			     (color :fg cc n1)
+			     n1)))
+		 (skribe-eval n2 e))))
+	      
+;*---------------------------------------------------------------------*/
+;*    &source-line-comment ...                                         */
+;*---------------------------------------------------------------------*/
+(markup-writer '&source-line-comment
+   :action (lambda (n e)
+	      (let* ((cc (engine-custom e 'source-comment-color))
+		     (n1 (bold (markup-body n)))
+		     (n2 (if (and (engine-custom e 'source-color) cc)
+			     (color :fg cc n1)
+			     n1)))
+		 (skribe-eval n2 e))))
+	      
+;*---------------------------------------------------------------------*/
+;*    &source-keyword ...                                              */
+;*---------------------------------------------------------------------*/
+(markup-writer '&source-keyword
+   :action (lambda (n e)
+	      (skribe-eval (underline (markup-body n)) e)))
+
+;*---------------------------------------------------------------------*/
+;*    &source-error ...                                                */
+;*---------------------------------------------------------------------*/
+(markup-writer '&source-error
+   :action (lambda (n e)
+	      (let* ((cc (engine-custom e 'source-error-color))
+		     (n1 (bold (markup-body n)))
+		     (n2 (if (and (engine-custom e 'error-color) cc)
+			     (color :fg cc (underline n1))
+			     (underline n1))))
+		 (skribe-eval n2 e))))
+
+;*---------------------------------------------------------------------*/
+;*    &source-define ...                                               */
+;*---------------------------------------------------------------------*/
+(markup-writer '&source-define
+   :action (lambda (n e)
+	      (let* ((cc (engine-custom e 'source-define-color))
+		     (n1 (bold (markup-body n)))
+		     (n2 (if (and (engine-custom e 'source-color) cc)
+			     (color :fg cc n1)
+			     n1)))
+		 (skribe-eval n2 e))))
+
+;*---------------------------------------------------------------------*/
+;*    &source-module ...                                               */
+;*---------------------------------------------------------------------*/
+(markup-writer '&source-module
+   :action (lambda (n e)
+	      (let* ((cc (engine-custom e 'source-module-color))
+		     (n1 (bold (markup-body n)))
+		     (n2 (if (and (engine-custom e 'source-color) cc)
+			     (color :fg cc n1)
+			     n1)))
+		 (skribe-eval n2 e))))
+
+;*---------------------------------------------------------------------*/
+;*    &source-markup ...                                               */
+;*---------------------------------------------------------------------*/
+(markup-writer '&source-markup
+   :action (lambda (n e)
+	      (let* ((cc (engine-custom e 'source-markup-color))
+		     (n1 (bold (markup-body n)))
+		     (n2 (if (and (engine-custom e 'source-color) cc)
+			     (color :fg cc n1)
+			     n1)))
+		 (skribe-eval n2 e))))
+
+;*---------------------------------------------------------------------*/
+;*    &source-thread ...                                               */
+;*---------------------------------------------------------------------*/
+(markup-writer '&source-thread
+   :action (lambda (n e)
+	      (let* ((cc (engine-custom e 'source-thread-color))
+		     (n1 (bold (markup-body n)))
+		     (n2 (if (and (engine-custom e 'source-color) cc)
+			     (color :fg cc n1)
+			     n1)))
+		 (skribe-eval n2 e))))
+
+;*---------------------------------------------------------------------*/
+;*    &source-string ...                                               */
+;*---------------------------------------------------------------------*/
+(markup-writer '&source-string
+   :action (lambda (n e)
+	      (let* ((cc (engine-custom e 'source-string-color))
+		     (n1 (markup-body n))
+		     (n2 (if (and (engine-custom e 'source-color) cc)
+			     (color :fg cc n1)
+			     n1)))
+		 (skribe-eval n2 e))))
+
+;*---------------------------------------------------------------------*/
+;*    &source-bracket ...                                              */
+;*---------------------------------------------------------------------*/
+(markup-writer '&source-bracket
+   :action (lambda (n e)
+	      (let* ((cc (engine-custom e 'source-bracket-color))
+		     (n1 (markup-body n))
+		     (n2 (if (and (engine-custom e 'source-color) cc)
+			     (color :fg cc (bold n1))
+			     (it n1))))
+		 (skribe-eval n2 e))))
+
+;*---------------------------------------------------------------------*/
+;*    &source-type ...                                                 */
+;*---------------------------------------------------------------------*/
+(markup-writer '&source-type
+   :action (lambda (n e)
+	      (let* ((cc (engine-custom e 'source-type-color))
+		     (n1 (markup-body n))
+		     (n2 (if (and (engine-custom e 'source-color) cc)
+			     (color :fg cc n1)
+			     (it n1))))
+		 (skribe-eval n2 e))))
+
+;*---------------------------------------------------------------------*/
+;*    &source-key ...                                                  */
+;*---------------------------------------------------------------------*/
+(markup-writer '&source-key
+   :action (lambda (n e)
+	      (let* ((cc (engine-custom e 'source-type-color))
+		     (n1 (markup-body n))
+		     (n2 (if (and (engine-custom e 'source-color) cc)
+			     (color :fg cc (bold n1))
+			     (it n1))))
+		 (skribe-eval n2 e))))
+
+;*---------------------------------------------------------------------*/
+;*    &source-type ...                                                 */
+;*---------------------------------------------------------------------*/
+(markup-writer '&source-type
+   :action (lambda (n e)
+	      (let* ((cc (engine-custom e 'source-type-color))
+		     (n1 (markup-body n))
+		     (n2 (if (and (engine-custom e 'source-color) cc)
+			     (color :fg "red" (bold n1))
+			     (bold n1))))
+		 (skribe-eval n2 e))))
+
+;*---------------------------------------------------------------------*/
+;*    Restore the base engine                                          */
+;*---------------------------------------------------------------------*/
+(default-engine-set! (find-engine 'base))
diff --git a/src/guile/skribilo/engine/xml.scm b/src/guile/skribilo/engine/xml.scm
new file mode 100644
index 0000000..4f26d12
--- /dev/null
+++ b/src/guile/skribilo/engine/xml.scm
@@ -0,0 +1,113 @@
+;*=====================================================================*/
+;*    serrano/prgm/project/skribe/skr/xml.skr                          */
+;*    -------------------------------------------------------------    */
+;*    Author      :  Manuel Serrano                                    */
+;*    Creation    :  Tue Sep  2 09:46:09 2003                          */
+;*    Last change :  Sat Mar  6 11:22:05 2004 (serrano)                */
+;*    Copyright   :  2003-04 Manuel Serrano                            */
+;*    -------------------------------------------------------------    */
+;*    Generic XML Skribe engine                                        */
+;*    -------------------------------------------------------------    */
+;*    Implementation:                                                  */
+;*       common: @path ../src/common/api.src@                          */
+;*       bigloo: @path ../src/bigloo/api.bgl@                          */
+;*    -------------------------------------------------------------    */
+;*    doc:                                                             */
+;*       @ref ../../doc/user/xmle.skb:ref@                             */
+;*=====================================================================*/
+
+(define-skribe-module (skribilo engine xml))
+
+;*---------------------------------------------------------------------*/
+;*    xml-engine ...                                                   */
+;*---------------------------------------------------------------------*/
+(define xml-engine
+   ;; setup the xml engine
+   (default-engine-set!
+      (make-engine 'xml
+		   :version 1.0
+		   :format "html"
+		   :delegate (find-engine 'base)
+		   :filter (make-string-replace '((#\< "&lt;")
+						  (#\> "&gt;")
+						  (#\& "&amp;")
+						  (#\" "&quot;")
+						  (#\@ "&#x40;"))))))
+
+;*---------------------------------------------------------------------*/
+;*    markup ...                                                       */
+;*---------------------------------------------------------------------*/
+(let ((xml-margin 0))
+   (define (make-margin)
+      (make-string xml-margin #\space))
+   (define (xml-attribute? val)
+      (cond
+	 ((or (string? val) (number? val) (boolean? val))
+	  #t)
+	 ((list? val)
+	  (every? xml-attribute? val))
+	 (else
+	  #f)))
+   (define (xml-attribute att val)
+      (let ((s (keyword->string att)))
+	 (printf " ~a=\"" (substring s 1 (string-length s)))
+	 (let loop ((val val))
+	    (cond
+	       ((or (string? val) (number? val))
+		(display val))
+	       ((boolean? val)
+		(display (if val "true" "false")))
+	       ((pair? val)
+		(for-each loop val))
+	       (else
+		#f)))
+	 (display #\")))
+   (define (xml-option opt val e)
+      (let* ((m (make-margin))
+	     (ks (keyword->string opt))
+	     (s (substring ks 1 (string-length ks))))
+	 (printf "~a<~a>\n" m s)
+	 (output val e)
+	 (printf "~a</~a>\n" m s)))
+   (define (xml-options n e)
+      ;; display the true options
+      (let ((opts (filter (lambda (o)
+			     (and (keyword? (car o))
+				  (not (xml-attribute? (cadr o)))))
+			  (markup-options n))))
+	 (if (pair? opts)
+	     (let ((m (make-margin)))
+		(display m)
+		(display "<options>\n")
+		(set! xml-margin (+ xml-margin 1))
+		(for-each (lambda (o)
+			     (xml-option (car o) (cadr o) e))
+			  opts)
+		(set! xml-margin (- xml-margin 1))
+		(display m)
+		(display "</options>\n")))))
+   (markup-writer #t
+      :options 'all
+      :before (lambda (n e)
+		 (printf "~a<~a" (make-margin) (markup-markup n))
+		 ;; display the xml attributes
+		 (for-each (lambda (o)
+			      (if (and (keyword? (car o))
+				       (xml-attribute? (cadr o)))
+				  (xml-attribute (car o) (cadr o))))
+			   (markup-options n))
+		 (set! xml-margin (+ xml-margin 1))
+		 (display ">\n"))
+      :action (lambda (n e)
+		 ;; options
+		 (xml-options n e)
+		 ;; body
+		 (output (markup-body n) e))
+      :after (lambda (n e)
+		(printf "~a</~a>\n" (make-margin) (markup-markup n))
+		(set! xml-margin (- xml-margin 1)))))
+
+;*---------------------------------------------------------------------*/
+;*    Restore the base engine                                          */
+;*---------------------------------------------------------------------*/
+(default-engine-set! (find-engine 'base))
diff --git a/src/guile/skribilo/eval.scm b/src/guile/skribilo/evaluator.scm
index 8bae8ad..b7e04c1 100644
--- a/src/guile/skribilo/eval.scm
+++ b/src/guile/skribilo/evaluator.scm
@@ -26,31 +26,31 @@
 ;; FIXME; On peut implémenter maintenant skribe-warning/node
 
 
-(define-module (skribilo eval)
+(define-module (skribilo evaluator)
   :export (skribe-eval skribe-eval-port skribe-load skribe-load-options
-	   skribe-include
-
-           run-time-module make-run-time-module))
+	   skribe-include))
 
 (use-modules (skribilo debug)
+	     (skribilo reader)
 	     (skribilo engine)
 	     (skribilo verify)
 	     (skribilo resolve)
 	     (skribilo output)
-	     (ice-9 optargs))
+             (skribilo types)
+             (skribilo lib)
+	     (skribilo vars)
+	     (ice-9 optargs)
+	     (oop goops))
 
 
-(define *skribe-loaded* '())		;; List of already loaded files
-(define *skribe-load-options* '())
-
-(define (%evaluate expr)
-  (eval expr (current-module)))
-
+
+;;; FIXME:  The following page must eventually go to `module.scm'.
 
 (define *skribilo-user-module* #f)
 
 (define *skribilo-user-imports*
   '((srfi srfi-1)
+    (srfi srfi-13)
     (oop goops)
     (skribilo module)
     (skribilo config)
@@ -58,31 +58,50 @@
     (skribilo runtime)
     (skribilo biblio)
     (skribilo lib)
-    (skribilo resolve)))
+    (skribilo resolve)
+    (skribilo engine)
+    (skribilo writer)))
 
+(define *skribe-core-modules* ;;; FIXME:  From `module.scm'.
+  '("utils" "api" "bib" "index" "param" "sui"))
 
 ;;;
 ;;; MAKE-RUN-TIME-MODULE
 ;;;
-(define (make-run-time-module)
+(define-public (make-run-time-module)
   "Return a new module that imports all the necessary bindings required for
 execution of Skribilo/Skribe code."
   (let ((the-module (make-module)))
         (for-each (lambda (iface)
                     (module-use! the-module (resolve-module iface)))
-                  *skribilo-user-imports*)
+                  (append *skribilo-user-imports*
+			  (map (lambda (mod)
+				 `(skribilo skribe
+					    ,(string->symbol mod)))
+			       *skribe-core-modules*)))
         (set-module-name! the-module '(skribilo-user))
         the-module))
 
 ;;;
 ;;; RUN-TIME-MODULE
 ;;;
-(define (run-time-module)
+(define-public (run-time-module)
   "Return the default instance of a Skribilo/Skribe run-time module."
   (if (not *skribilo-user-module*)
       (set! *skribilo-user-module* (make-run-time-module)))
   *skribilo-user-module*)
 
+
+
+(define *skribe-loaded* '())		;; List of already loaded files
+(define *skribe-load-options* '())
+
+(define (%evaluate expr)
+  (eval expr (current-module)))
+
+
+
+
 ;;;
 ;;; SKRIBE-EVAL
 ;;;
@@ -98,19 +117,20 @@ execution of Skribilo/Skribe code."
 ;;;
 ;;; SKRIBE-EVAL-PORT
 ;;;
-(define* (skribe-eval-port port engine #:key (env '()))
+(define* (skribe-eval-port port engine #:key (env '())
+			                     (reader %default-reader))
   (with-debug 2 'skribe-eval-port
      (debug-item "engine=" engine)
      (let ((e (if (symbol? engine) (find-engine engine) engine)))
        (debug-item "e=" e)
        (if (not (is-a? e <engine>))
-	   (skribe-error 'skribe-eval-port "Cannot find engine" engine)
-	   (let loop ((exp (read port)))
+	   (skribe-error 'skribe-eval-port "cannot find engine" engine)
+	   (let loop ((exp (reader port)))
 	     (with-debug 10 'skribe-eval-port
 		(debug-item "exp=" exp))
 	     (unless (eof-object? exp)
 	       (skribe-eval (%evaluate exp) e :env env)
-	       (loop (read port))))))))
+	       (loop (reader port))))))))
 
 ;;;
 ;;; SKRIBE-LOAD
@@ -124,13 +144,14 @@ execution of Skribilo/Skribe code."
   (with-debug 4 'skribe-load
      (debug-item "  engine=" engine)
      (debug-item "  path=" path)
-     (debug-item "  opt" opt)
+     (debug-item "  opt=" opt)
 
      (let* ((ei  (cond
 		  ((not engine) *skribe-engine*)
 		  ((engine? engine) engine)
-		  ((not (symbol? engine)) (skribe-error 'skribe-load
-							"Illegal engine" engine))
+		  ((not (symbol? engine))
+                   (skribe-error 'skribe-load
+                                 "Illegal engine" engine))
 		  (else engine)))
 	    (path (cond
 		    ((not path) (skribe-path))
@@ -138,14 +159,14 @@ execution of Skribilo/Skribe code."
 		    ((not (and (list? path) (every? string? path)))
 			(skribe-error 'skribe-load "Illegal path" path))
 		    (else path)))
-	     (filep (find-path file path)))
+            (filep (search-path path file)))
 
        (set! *skribe-load-options* opt)
 
        (unless (and (string? filep) (file-exists? filep))
 	 (skribe-error 'skribe-load
-		       (format "Cannot find ~S in path" file)
-		       *skribe-path*))
+		       (string-append "cannot find `" file "' in path")
+		       (skribe-path)))
 
        ;; Load this file if not already done
        (unless (member filep *skribe-loaded*)
@@ -167,7 +188,7 @@ execution of Skribilo/Skribe code."
   (unless (every string? path)
     (skribe-error 'skribe-include "Illegal path" path))
 
-  (let ((path (find-path file path)))
+  (let ((path (search-path path file)))
     (unless (and (string? path) (file-exists? path))
       (skribe-error 'skribe-load
 		    (format "Cannot find ~S in path" file)
diff --git a/src/guile/skribilo/lib.scm b/src/guile/skribilo/lib.scm
index 26b348a..bb41597 100644
--- a/src/guile/skribilo/lib.scm
+++ b/src/guile/skribilo/lib.scm
@@ -32,6 +32,13 @@
            skribe-warning skribe-warning/ast
            skribe-message
 
+           ;; paths as lists of directories
+
+           %skribilo-load-path
+           %skribilo-image-path %skribilo-bib-path %skribilo-source-path
+
+           ;; compatibility
+
            skribe-path skribe-path-set!
            skribe-image-path skribe-image-path-set!
            skribe-bib-path skribe-bib-path-set!
@@ -45,6 +52,7 @@
            printf fprintf
            any? every?
            process-input-port process-output-port process-error-port
+	   %procedure-arity
 
            make-hashtable hashtable?
            hashtable-get hashtable-put! hashtable-update!
@@ -58,6 +66,9 @@
                   ;; for compatibility
                   unwind-protect unless when)
 
+  :use-module (skribilo config)
+  :use-module (skribilo types)
+
   :use-module (srfi srfi-1)
   :use-module (ice-9 optargs))
 
@@ -79,7 +90,7 @@
 (define-macro (define-markup bindings . body)
   ;; This is just an `(ice-9 optargs)' kind of `lambda*', with DSSSL
   ;; keyword-style conversion enabled.  However, using `(ice-9 optargs)', the
-  ;; `#:rest' argument can only appear last which not what Skribe/DSSSL
+  ;; `#:rest' argument can only appear last, which is not what Skribe/DSSSL
   ;; expect, hence `fix-rest-arg'.
   (define (fix-rest-arg args)
     (let loop ((args args)
@@ -256,44 +267,34 @@
 	(Loop (cdr l))))))
 
 
-
+
 ;;; ======================================================================
 ;;;
 ;;;				A C C E S S O R S
 ;;;
 ;;; ======================================================================
 
-;;							  SKRIBE-PATH
-(define (skribe-path) *skribe-path*)
-
-(define (skribe-path-set! path)
-  (if (not (and (list? path) (every string? path)))
-      (skribe-error 'skribe-path-set! "Illegal path" path)
-      (set! *skribe-path* path)))
 
-;;							  SKRIBE-IMAGE-PATH
-(define (skribe-image-path) *skribe-image-path*)
+(define %skribilo-load-path (list (skribilo-default-path) "."))
+(define %skribilo-image-path '("."))
+(define %skribilo-bib-path '("."))
+(define %skribilo-source-path '("."))
 
-(define (skribe-image-path-set! path)
-  (if (not (and (list? path) (every string? path)))
-      (skribe-error 'skribe-image-path-set! "Illegal path" path)
-      (set! *skribe-image-path* path)))
+(define-macro (define-compatibility-accessors var oldname)
+  (let ((newname (symbol-append '%skribilo- var))
+        (setter  (symbol-append oldname '-set!)))
+    `(begin
+       (define (,oldname) ,newname)
+       (define (,setter path)
+         (if (not (and (list? path) (every string? path)))
+             (skribe-error ',setter "illegal path" path)
+             (set! ,newname path))))))
 
-;;							  SKRIBE-BIB-PATH
-(define (skribe-bib-path) *skribe-bib-path*)
+(define-compatibility-accessors load-path   skribe-path)
+(define-compatibility-accessors image-path  skribe-image-path)
+(define-compatibility-accessors bib-path    skribe-bib-path)
+(define-compatibility-accessors source-path skribe-source-path)
 
-(define (skribe-bib-path-set! path)
-  (if (not (and (list? path) (every string? path)))
-      (skribe-error 'skribe-bib-path-set! "Illegal path" path)
-      (set! *skribe-bib-path* path)))
-
-;;							  SKRBE-SOURCE-PATH
-(define (skribe-source-path) *skribe-source-path*)
-
-(define (skribe-source-path-set! path)
-  (if (not (and (list? path) (every string? path)))
-      (skribe-error 'skribe-source-path-set! "Illegal path" path)
-      (set! *skribe-source-path* path)))
 
 
 ;;; ======================================================================
@@ -346,6 +347,14 @@
 
 (define find-runtime-type	(lambda (obj) obj))
 
+
+;;;
+;;; Various things.
+;;;
+
+(define (%procedure-arity proc)
+    (car (procedure-property proc 'arity)))
+
 (define-macro (unwind-protect expr1 expr2)
   ;; This is no completely correct.
   `(dynamic-wind
@@ -353,8 +362,8 @@
        (lambda () ,expr1)
        (lambda () ,expr2)))
 
-(define-macro (unless expr body)
-  `(if (not ,expr) ,body))
+(define-macro (unless condition . exprs)
+  `(if (not ,condition) (begin ,@exprs)))
 
-(define-macro (when expr . exprs)
-  `(if ,expr (begin ,@exprs)))
+(define-macro (when condition . exprs)
+  `(if ,condition (begin ,@exprs)))
diff --git a/src/guile/skribilo/module.scm b/src/guile/skribilo/module.scm
index 4d29f31..50c7b23 100644
--- a/src/guile/skribilo/module.scm
+++ b/src/guile/skribilo/module.scm
@@ -20,7 +20,8 @@
 
 (define-module (skribilo module)
   :use-module (skribilo reader)
-  :use-module (skribilo eval)
+  :use-module (skribilo evaluator)
+  :use-module (skribilo debug)
   :use-module (ice-9 optargs))
 
 ;;; Author:  Ludovic Courtès
@@ -43,7 +44,10 @@
      ;; to actually create and read the module.
      (use-modules (skribilo module)
                   (skribilo reader)
-                  (skribilo eval)   ;; `run-time-module'
+                  (skribilo evaluator)   ;; `run-time-module'
+                  (skribilo engine)
+		  (skribilo writer)
+                  (skribilo types)
 
                   (srfi srfi-1)
                   (ice-9 optargs)
@@ -53,26 +57,26 @@
                   (skribilo vars)
                   (skribilo config))
 
-     (use-syntax (skribilo lib))
 
      ;; The `define' below results in a module-local definition.  So the
      ;; definition of `read' in the `(guile-user)' module is left untouched.
      ;(define read ,(make-reader 'skribe))
 
      ;; Everything is exported.
-     (define-macro (define . things)
-       (let* ((first (car things))
-              (binding (cond ((symbol? first) first)
-                             ((list? first)   (car first))
-                             ((pair? first)   (car first))
-                             (else
-                              (error "define/skribe: bad formals" first)))))
-         `(begin
-            (define-public ,@things)
-            ;; Automatically push it to the run-time user module.
-;             (module-define! ,(run-time-module)
-;                             (quote ,binding) ,binding)
-            )))))
+;      (define-macro (define . things)
+;        (let* ((first (car things))
+;               (binding (cond ((symbol? first) first)
+;                              ((list? first)   (car first))
+;                              ((pair? first)   (car first))
+;                              (else
+;                               (error "define/skribe: bad formals" first)))))
+;          `(begin
+;             (define-public ,@things)
+;             ;; Automatically push it to the run-time user module.
+; ;             (module-define! ,(run-time-module)
+; ;                             (quote ,binding) ,binding)
+;             )))
+     ))
 
 
 ;; Make it available to the top-level module.
@@ -80,39 +84,44 @@
                 'define-skribe-module define-skribe-module)
 
 
+(define-public *skribe-core-modules*
+  '("utils" "api" "bib" "index" "param" "sui"))
+
+
+
+;; FIXME:  This will eventually be replaced by the per-module reader thing in
+;;         Guile.
 (define-public (load-file-with-read file read module)
-  (with-input-from-file file
-    (lambda ()
+  (with-debug 5 'load-file-with-read
+     (debug-item "loading " file)
+
+     (with-input-from-file (search-path %load-path file)
+       (lambda ()
 ;      (format #t "load-file-with-read: ~a~%" read)
-      (let loop ((sexp (read))
-                 (result #f))
-        (if (eof-object? sexp)
-            result
-            (begin
+	 (let loop ((sexp (read))
+		    (result #f))
+	   (if (eof-object? sexp)
+	       result
+	       (begin
 ;              (format #t "preparing to evaluate `~a'~%" sexp)
-              (loop (read)
-                    (eval sexp module))))))))
+		 (loop (read)
+		       (primitive-eval sexp)))))))))
 
 (define-public (load-skribilo-file file reader-name)
   (load-file-with-read file (make-reader reader-name) (current-module)))
 
-(define-public *skribe-core-modules*
-  '("utils" "api" "bib" "index" "param" "sui"))
-
 (define*-public (load-skribe-modules #:optional (debug? #f))
   "Load the core Skribe modules, both in the @code{(skribilo skribe)}
 hierarchy and in @code{(run-time-module)}."
   (for-each (lambda (mod)
-              (if debug?
-                  (format #t "loading skribe module `~a'...~%" mod))
-              (load-skribilo-file (string-append "skribe/" mod ".scm")
-                                  'skribe))
-            *skribe-core-modules*)
-  (for-each (lambda (mod)
+              (format #t "~~ loading skribe module `~a'...~%" mod)
+              (load-skribilo-file (string-append "skribilo/skribe/"
+                                                 mod ".scm")
+                                  'skribe)
               (module-use! (run-time-module)
-                           (resolve-interface (list skribilo skribe
-                                                    (string->symbol
-                                                     mod)))))
+                           (resolve-module `(skribilo skribe
+                                             ,(string->symbol mod)))))
             *skribe-core-modules*))
 
+
 ;;; module.scm ends here
diff --git a/src/guile/skribilo/output.scm b/src/guile/skribilo/output.scm
index cc690ec..eeff397 100644
--- a/src/guile/skribilo/output.scm
+++ b/src/guile/skribilo/output.scm
@@ -1,24 +1,24 @@
 ;;;;
 ;;;; output.stk	-- Skribe Output Stage
-;;;; 
+;;;;
 ;;;; Copyright © 2003-2004 Erick Gallesio - I3S-CNRS/ESSI <eg@unice.fr>
-;;;; 
-;;;; 
+;;;;
+;;;;
 ;;;; This program is free software; you can redistribute it and/or modify
 ;;;; it under the terms of the GNU General Public License as published by
 ;;;; the Free Software Foundation; either version 2 of the License, or
 ;;;; (at your option) any later version.
-;;;; 
+;;;;
 ;;;; This program is distributed in the hope that it will be useful,
 ;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
 ;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 ;;;; GNU General Public License for more details.
-;;;; 
+;;;;
 ;;;; You should have received a copy of the GNU General Public License
 ;;;; along with this program; if not, write to the Free Software
-;;;; Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 
+;;;; Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
 ;;;; USA.
-;;;; 
+;;;;
 ;;;;           Author: Erick Gallesio [eg@essi.fr]
 ;;;;    Creation date: 13-Aug-2003 18:42 (eg)
 ;;;; Last file update:  5-Mar-2004 10:32 (eg)
@@ -29,8 +29,8 @@
 
 (use-modules (skribilo debug)
 	     (skribilo types)
-;	     (skribe engine)
-;	     (skribe writer)
+;	     (skribilo engine)
+	     (skribilo writer)
 	     (oop goops))
 
 
@@ -47,7 +47,7 @@
 	(invoke (slot-ref w 'action) n e)
 	(invoke (slot-ref w 'after)  n e))))
 
-   
+
 
 (define (output node e . writer)
   (with-debug 3 'output
@@ -135,7 +135,7 @@
 		      (+ (- (char->integer c)
 			    (char->integer #\0))
 			 (* 10 n))))))))
-    
+
     (let loop ((i 0))
       (cond
 	((= i lf)
diff --git a/src/guile/skribilo/reader.scm b/src/guile/skribilo/reader.scm
index a149ab1..27c740b 100644
--- a/src/guile/skribilo/reader.scm
+++ b/src/guile/skribilo/reader.scm
@@ -21,7 +21,8 @@
 (define-module (skribilo reader)
   :use-module (srfi srfi-9)  ;; records
   :use-module (srfi srfi-17) ;; generalized `set!'
-  :export (%make-reader lookup-reader make-reader)
+  :export (%make-reader lookup-reader make-reader
+	   %default-reader)
   :export-syntax (define-reader define-public-reader))
 
 ;;; Author:  Ludovic Courtès
@@ -65,7 +66,7 @@
 
 (define (lookup-reader name)
   "Look for a reader named @var{name} (a symbol) in the @code{(skribilo
-readers)} module hierarchy.  If no such reader was found, an error is
+reader)} module hierarchy.  If no such reader was found, an error is
 raised."
   (let ((m (resolve-module `(skribilo reader ,name))))
     (if (module-bound? m 'reader-specification)
@@ -78,5 +79,6 @@ raised."
          (make (reader:make spec)))
     (make)))
 
+(define %default-reader (make-reader 'skribe))
 
 ;;; reader.scm ends here
diff --git a/src/guile/skribilo/resolve.scm b/src/guile/skribilo/resolve.scm
index 2dc5e98..e59a2f8 100644
--- a/src/guile/skribilo/resolve.scm
+++ b/src/guile/skribilo/resolve.scm
@@ -50,11 +50,13 @@
 (define (resolve! ast engine env)
   (with-debug 3 'resolve
      (debug-item "ast=" ast)
-     (fluid-let ((*unresolved* #f))
+     (let ((*unresolved* (make-fluid)))
+       (fluid-set! *unresolved* #f)
+
        (let Loop ((ast ast))
-	 (set! *unresolved* #f)
+	 (fluid-set! *unresolved* #f)
 	 (let ((ast (do-resolve! ast engine env)))
-	   (if *unresolved*
+	   (if (fluid-ref *unresolved*)
 	       (Loop ast)
 	       ast))))))
 
diff --git a/src/guile/skribilo/runtime.scm b/src/guile/skribilo/runtime.scm
index af76237..2642f7e 100644
--- a/src/guile/skribilo/runtime.scm
+++ b/src/guile/skribilo/runtime.scm
@@ -48,7 +48,7 @@
 	     (skribilo verify)
 	     (skribilo resolve)
 	     (skribilo output)
-	     (skribilo eval)
+	     (skribilo evaluator)
 	     (oop goops))
 
 
@@ -195,7 +195,7 @@
 	      to))))))
 
 (define (convert-image file formats)
-  (let ((path (find-path file (skribe-image-path))))
+  (let ((path (search-path (skribe-image-path) file)))
     (if (not path)
 	(skribe-error 'convert-image
 		      (format "Can't find `~a' image file in path: " file)
@@ -259,14 +259,17 @@
 	  (display (if res (cadr res) ch) out)))
       (get-output-string out))))
 
+(define string->html
+  (%make-general-string-replace '((#\" "&quot;") (#\& "&amp;") (#\< "&lt;")
+				  (#\> "&gt;"))))
 
 (define (make-string-replace lst)
   (let ((l (sort lst (lambda (r1 r2) (char<? (car r1) (car r2))))))
     (cond
       ((equal? l '((#\" "&quot;") (#\& "&amp;") (#\< "&lt;") (#\> "&gt;")))
-	 string->html)
+       string->html)
       (else
-	 (%make-general-string-replace lst)))))
+       (%make-general-string-replace lst)))))
 
 
 
diff --git a/src/guile/skribilo/source.scm b/src/guile/skribilo/source.scm
index e56f350..1e88d45 100644
--- a/src/guile/skribilo/source.scm
+++ b/src/guile/skribilo/source.scm
@@ -42,7 +42,7 @@
 ;*    source-read-lines ...                                            */
 ;*---------------------------------------------------------------------*/
 (define (source-read-lines file start stop tab)
-   (let ((p (find-path file (skribe-source-path))))
+   (let ((p (search-path (skribe-source-path) file)))
      (if (or (not (string? p)) (not (file-exists? p)))
 	  (skribe-error 'source
 			(format "Can't find `~a' source file in path" file)
@@ -119,7 +119,7 @@
 ;*    source-read-definition ...                                       */
 ;*---------------------------------------------------------------------*/
 (define (source-read-definition file definition tab lang)
-   (let ((p (find-path file (skribe-source-path))))
+   (let ((p (search-path (skribe-source-path) file)))
       (cond
 	 ((not (language-extractor lang))
 	  (skribe-error 'source
diff --git a/src/guile/skribilo/writer.scm b/src/guile/skribilo/writer.scm
index 048dcfb..70ba817 100644
--- a/src/guile/skribilo/writer.scm
+++ b/src/guile/skribilo/writer.scm
@@ -1,24 +1,24 @@
 ;;;;
 ;;;; writer.stk	-- Skribe Writer Stuff
-;;;; 
+;;;;
 ;;;; Copyright © 2003-2004 Erick Gallesio - I3S-CNRS/ESSI <eg@essi.fr>
-;;;; 
-;;;; 
+;;;;
+;;;;
 ;;;; This program is free software; you can redistribute it and/or modify
 ;;;; it under the terms of the GNU General Public License as published by
 ;;;; the Free Software Foundation; either version 2 of the License, or
 ;;;; (at your option) any later version.
-;;;; 
+;;;;
 ;;;; This program is distributed in the hope that it will be useful,
 ;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
 ;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 ;;;; GNU General Public License for more details.
-;;;; 
+;;;;
 ;;;; You should have received a copy of the GNU General Public License
 ;;;; along with this program; if not, write to the Free Software
-;;;; Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 
+;;;; Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
 ;;;; USA.
-;;;; 
+;;;;
 ;;;;           Author: Erick Gallesio [eg@essi.fr]
 ;;;;    Creation date: 15-Sep-2003 22:21 (eg)
 ;;;; Last file update:  4-Mar-2004 10:48 (eg)
@@ -31,8 +31,10 @@
 
 
 (use-modules (skribilo debug)
-;	     (skribilo engine)
+	     (skribilo engine)
 	     (skribilo output)
+	     (skribilo types)
+	     (skribilo lib)
 
 	     (oop goops)
 	     (ice-9 optargs))
@@ -40,7 +42,7 @@
 
 ;;;; ======================================================================
 ;;;;
-;;;; 				INVOKE
+;;;;				INVOKE
 ;;;;
 ;;;; ======================================================================
 (define (invoke proc node e)
@@ -56,7 +58,7 @@
 
 ;;;; ======================================================================
 ;;;;
-;;;; 				LOOKUP-MARKUP-WRITER
+;;;;				LOOKUP-MARKUP-WRITER
 ;;;;
 ;;;; ======================================================================
 (define (lookup-markup-writer node e)
@@ -76,7 +78,7 @@
 
 ;;;; ======================================================================
 ;;;;
-;;;; 				MAKE-WRITER-PREDICATE
+;;;;				MAKE-WRITER-PREDICATE
 ;;;;
 ;;;; ======================================================================
 (define (make-writer-predicate markup predicate class)
@@ -104,26 +106,55 @@
 
 ;;;; ======================================================================
 ;;;;
-;;;; 				MARKUP-WRITER
+;;;;				MARKUP-WRITER
 ;;;;
 ;;;; ======================================================================
-(define* (markup-writer markup #:optional engine
+; (define-macro (lambda** arglist . body)
+;   (let ((parse-arglist (module-ref (resolve-module '(ice-9 optargs))
+; 				   'parse-arglist)))
+;     (parse-arglist
+;      arglist
+;      (lambda (mandatory-args optionals keys aok? rest-arg)
+;        (let ((l**-rest-arg (gensym "L**-rest"))
+; 	     (l**-loop (gensym "L**-loop")))
+; 	 `(lambda (,@mandatory-args . ,l**-rest-arg)
+; 	    `(let ,l**-loop ((,l**-rest-arg ,l**-rest-arg)
+; 			     (,rest-arg '())
+; 			     ,@optionals
+; 			     ,@keys)
+; 		  (if (null? ,l**-rest-arg)
+; 		      (begin
+; 			,@body)
+
+(define* (markup-writer markup ;; #:optional (engine #f)
 			#:key (predicate #f) (class #f) (options '())
-		              (validate #f)
-		              (before #f) (action 'unspecified) (after #f))
-  (let ((e (or engine (default-engine))))
+			      (validate #f)
+			      (before #f)
+			      (action 'unspecified)
+			      (after #f)
+			#:rest engine)
+  ;;; FIXME:  `lambda*' sucks and fails when both optional arguments and
+  ;;; keyword arguments are used together.  In particular, if ENGINE is not
+  ;;; specified by the caller but other keyword arguments are specified, it
+  ;;; will consider the value of ENGINE to be the first keyword found.
+
+;  (let ((e (or engine (default-engine))))
+  (let ((e (or (and (list? engine)
+		    (not (keyword? (car engine))))
+	       (default-engine))))
+
     (cond
       ((and (not (symbol? markup)) (not (eq? markup #t)))
-       (skribe-error 'markup-writer "Illegal markup" markup))
+       (skribe-error 'markup-writer "illegal markup" markup))
       ((not (engine? e))
-          (skribe-error 'markup-writer "Illegal engine" e))
+	  (skribe-error 'markup-writer "illegal engine" e))
       ((and (not predicate)
 	    (not class)
 	    (null? options)
 	    (not before)
 	    (eq? action 'unspecified)
 	    (not after))
-         (skribe-error 'markup-writer "Illegal writer" markup))
+       (skribe-error 'markup-writer "illegal writer" markup))
       (else
        (let ((m  (make-writer-predicate markup predicate class))
 	     (ac (if (eq? action 'unspecified)
@@ -135,35 +166,35 @@
 
 ;;;; ======================================================================
 ;;;;
-;;;; 				MARKUP-WRITER-GET
+;;;;				MARKUP-WRITER-GET
 ;;;;
 ;;;; ======================================================================
 (define* (markup-writer-get markup :optional engine :key (class #f) (pred #f))
   (let ((e (or engine (default-engine))))
     (cond
       ((not (symbol? markup))
-         (skribe-error 'markup-writer-get "Illegal symbol" markup))
+	 (skribe-error 'markup-writer-get "Illegal symbol" markup))
       ((not (engine? e))
-         (skribe-error 'markup-writer-get "Illegal engine" e))
+	 (skribe-error 'markup-writer-get "Illegal engine" e))
       (else
        (let liip ((e e))
 	 (let loop ((w* (slot-ref e 'writers)))
 	   (cond
 	     ((pair? w*)
-	        (if (and (eq? (writer-ident (car w*)) markup)
+		(if (and (eq? (writer-ident (car w*)) markup)
 			 (equal? (writer-class (car w*)) class)
 			 (or (unspecified? pred)
 			     (eq? (slot-ref (car w*) 'upred) pred)))
 		    (car w*)
 		    (loop (cdr w*))))
 	     ((engine? (slot-ref e 'delegate))
-	        (liip (slot-ref e 'delegate)))
+		(liip (slot-ref e 'delegate)))
 	     (else
-	        #f))))))))
+		#f))))))))
 
 ;;;; ======================================================================
 ;;;;
-;;;; 				MARKUP-WRITER-GET*
+;;;;				MARKUP-WRITER-GET*
 ;;;;
 ;;;; ======================================================================
 
@@ -194,16 +225,16 @@
 
 ;;; ======================================================================
 ;;;;
-;;;; 				COPY-MARKUP-WRITER
+;;;;				COPY-MARKUP-WRITER
 ;;;;
 ;;;; ======================================================================
 (define* (copy-markup-writer markup old-engine :optional new-engine
-			      :key (predicate 'unspecified) 
-			           (class 'unspecified) 
+			      :key (predicate 'unspecified)
+				   (class 'unspecified)
 				   (options 'unspecified)
-			           (validate 'unspecified) 
-				   (before 'unspecified) 
-				   (action 'unspecified) 
+				   (validate 'unspecified)
+				   (before 'unspecified)
+				   (action 'unspecified)
 				   (after 'unspecified))
     (let ((old        (markup-writer-get markup old-engine))
 	  (new-engine (or new-engine old-engine)))