This is Perl module Sub::Inspector. INSTALLATION Type the following command: $ curl -L http://cpanmin.us | perl - Sub::Inspector Or install cpanm and then run the following command to install Sub::Inspector: $ cpanm Sub::Inspector If you get an archive of this distribution, unpack it and build it as per the usual: $ tar xzf Sub-Inspector-$version.tar.gz $ cd Sub-Inspector-$version $ perl Makefile.PL $ make && make test Then install it: $ make install DOCUMENTATION Sub::Inspector documentation is available as in POD. So you can do: $ perldoc Sub::Inspector to read the documentation online with your favorite pager. LICENSE AND COPYRIGHT Copyright (c) 2012, <>. All rights reserved. This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.