As an additional means of accessing the locally installed Perl documentation, I would suggest Slaven Rezic's Tk::Pod and the tkpod program that comes with it.
Tk applications might look a little old-fashioned to most, but I found this tool to be valuable.
- Install Tk::Pod (using PPM or from CPAN using "cpan")
- Install perlindex the same way. If installing via CPAN, you should type "cpan Text::English". (perlindex might be what you're looking for anyway.)
- Run "perlindex -index" (wait).
- Run "tkpod".
- Select "Search Fulltext" from the "Search" menu.
- Type the keyword.