The perl module packages add useful objects to the Perl language. Modules utilized by packages throughout BLFS are listed here along with their dependencies. PDL-&PDL-version Astro-FITS-Header-&Astro-FITS-Header-version; Gtk-Perl-&Gtk-Perl-version; XML-Writer-&XML-Writer-version; XML-Parser-&XML-Parser-version; Parse-RecDescent-&Parse-RecDescent-version;