=head1 PREREQUISITES

At present, the Template Toolkit requires Perl 5.005.   Efforts will soon
be made to support I<some> earlier versions (e.g. 5.004).

The F<ttree> script uses the AppConfig module (version 1.52+) for 
managing configuration information.  This is available from CPAN as

    /modules/by-module/AppConfig/AppConfig-<version>.tar.gz
    /authors/id/ABW/AppConfig-<version>.tar.gz