Current Perl documentation can be found at perldoc.perl.org.

Here is our local, out-dated (pre-5.6) version:

Use embedded POD to discard it:

    # program is here

    =for nobody
    This paragraph is commented out

    # program continues

    =begin comment text

    all of this stuff

    here will be ignored
    by everyone

    =end comment text

    =cut

This can't go just anywhere. You have to put a pod directive where the parser is expecting a new statement, not just in the middle of an expression or some other arbitrary yacc grammar production.