(document :title [Hello World!] 

(chapter :title [A first Section] [
 This is a ,(bold [very]) ,(it [simple]) ,(color :fg [red] [text]).])

(chapter :title [A second Section] [
 That section contains an ,(bold itemize) construction:
 ,(itemize (item [first item])
           (item [second item])
           (item [third item]))]))