I'm trying to insert an HTML comment in the head tag of a doc generated by CGI.pm, but I'm getting and error and I can't see what I'm doing wrong. 
#!/usr/local/perl-5.8.7/bin/perl -T
use warnings;
use strict;
use CGI;
use CGI::Carp qw/fatalsToBrowser warningsToBrowser/;
my $query = new CGI;
print $query->start_html( 
        -head=>comment('commentary in the <head>'),
);
print $query->end_html;

[download]
gives 
<h1>Software error:</h1>
<pre>Undefined subroutine &amp;main::comment called at /usr/local/apac
+he-1.3.33/cgi-bin/tryCommentInHead.cgi line 7.
</pre>
<p>
For help, please send mail to this site's webmaster, giving this error
+ message 
and the time and date of the error.
 
</p>
[Mon Aug 14 15:00:08 2006] tryCommentInHead.cgi: Undefined subroutine 
+&main::comment called at /usr/local/apache-1.3.33/cgi-bin/tryCommentI
+nHead.cgi line 7.

[download]

In reply to CGI.pm: HTML comment in <head> by andyford

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
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  • See Writeup Formatting Tips and other pages linked from there for more info.