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