You can annotate an OmniMark program with descriptive text, called a comment, which is ignored by OmniMark. Comments help make a program more understandable for human readers. Comments can appear in an OmniMark program anywhere white space is allowed; that is, anywhere except within a name, keyword, or string.
Comments begin with a semicolon and continue for the rest of the line. The following example illustrates the use of comments:
; Rule for paragraphs invoked after the start of a chapter element par when chapter-start output "\firstpar{}%sc%n"
There are no block comments in OmniMark. To mark a block of text as comment, you must put a semicolon at the beginning of each line.