This is Perl module HTML::Entities::Recursive. INSTALLATION HTML::Entities::Recursive installation is straightforward. If your CPAN shell is set up, you should just be able to do % cpan HTML::Entities::Recursive Download it, unpack it, then build it as per the usual: % perl Makefile.PL % make && make test Then install it: % make install DOCUMENTATION HTML::Entities::Recursive documentation is available as in POD. So you can do: % perldoc HTML::Entities::Recursive to read the documentation online with your favorite pager. punytan