Comments are optional descriptive notes printed on the assembler output listing for programmer reference and documentation. Comments should be included throughout the source program to explain subroutine linkages, data formats, algorithms used, formats of inputs processed, and so forth. A comment may follow a statement on the same line, or the comment may be entered on one or more separate statement lines. The comment has no effect on the assembled object module file.
The following conventions apply to comments:
A comment must be preceded by a semicolon (; ).
All ASCII characters, including blanks, may be used in comments.