s/</E<lt>/g will do unless you want to build tags dynamically too. (Then you also have to escape ">", and possibly "|" and "/" too.)

Note that you probably want one of the following here: 

Compare using Perl's C<E<lt>=E<gt>> instead of C<cmp>

[download]
or 
Compare using Perl's C<< <=> >> instead of C<< cmp >>

[download]

In reply to Re: Escaping special characters for POD output by ikegami
in thread Escaping special characters for POD output by perlancar

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