The markup on PerlMonks is not strict HTML; for instance, <code> tags are non-standard and square brackets are handled specially.

For markup here, you'll need to use name attributes to create fragment identifiers to link to.

I think the majority of browsers will accept name attribute values as fragment identifiers — I just successfully tested that with Firefox, Opera and Safari — so if you need to create links to sections here, from another site, you can do so like this:

<a href="http://www.perlmonks.org/?node_id=43037#general">...</a>
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Important: Please do not use markup like that here! See "All Links Within PerlMonks Should Be Relative" for details.