Sort::Tree implements a mechanism for sorting a list of objects into a
tree structure and flattening it back into a list.  Among other things,
this is useful for displaying database queries in hierarchical views,
such as nested categories, parent-child relationships, threaded
discussions, and so forth.

The motivation for writing this was that I needed to implement
hierarchically organized folders in a document management system at the
Open Source Development Labs and didn't see something like this already
in CPAN or mentioned in the "Mastering Algorithms with Perl" book, which
was a bit surprising given how often one needs to display data in a
hierarchical fashion.

Trees have a lot to do with Graph theory, so if this module doesn't suit
your fancy, have a look at the Graph:: Perl modules for an academically
oriented implementation that employs vertex, edge, and node operations.

For more information on how to use the perl module, see the
pod documentation via the command
  perldoc Sort::Tree
or, after installation, view the man pages with
  man Sort::Tree

For instructions on how to install the code, see the file INSTALL.

Problems, questions, etc. may be sent to bryce@bryceharrington.com
or bryceharrington@yahoo.com.

Sort-Tree is Copyright (c) 2003, by Bryce Harrington. 
All rights reserved. You may distribute this code under the terms 
of either the GNU General Public License or the Artistic License, 
as specified in the Perl README file.