Creates a warnings category with the same name as the current package.
perldoc2tree.cgi: /usr/lib/perl5/5.8.8/warnings/register.pm: cannot resolve L in paragraph 10.
perldoc2tree.cgi: /usr/lib/perl5/5.8.8/warnings/register.pm: cannot resolve L in paragraph 10.
See warnings and perllexwarn for more information on this module's
usage.