Index and Search local Perl Documentation

 Perldoc::Search uses the swish-e engine to index the local Perl
 documentation. It provides both the command line utility perldig
 and an API to perform searches on the index. It uses SWISH::API::Common
 as the indexing and search engine.
 .
 This package also contains the command line utility perldig, which digs up
 keywords in the local Perl documentation