This is the Perl module Error::Hierarchy.

Installation

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

% cpan Error::Hierarchy

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

% perl Makefile.PL
% make && make test

Then install it:

% make install

Documentation

Error::Hierarchy documentation is available as in POD. So you can do:

% perldoc Error::Hierarchy

to read the documentation online with your favorite pager.

Marcel Gruenauer