The error message you're getting is telling you that the subroutine &main::comment is undefined, which is true, because you're not importing the function from CGI.pm. To do that, you need to do: 

use CGI qw/:standard/;

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But it looks like you're planning to use the OO style instead, so instead of importing, you can just use $query->comment() instead of comment().

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

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