This is Perl module PerlX::Range.

INSTALLATION

PerlX::Range installation is straightforward. If your CPAN shell is set up,
you should just be able to do

   % cpan PerlX::Range

Download it, unpack it, then build it as per the usual:

   % perl Makefile.PL
   % make && make test

Then install it:

   % make install

DOCUMENTATION

PerlX::Range documentation is available as in POD. So you can do:

   % perldoc PerlX::Range

to read the documentation online with your favorite pager.

Kang-min Liu