This module works the closest that I can see to Template::Recall, except it doesn't have the ability to save the sections in a single file. It has a define_nofile() method, but this requires you to define the template as a string in the code file... I wondered the same thing about the namespace -- I guess they were simply focused on CGI at the time.

Template::Recall can also do sections as files, but I've found that in practice, keeping sections in a single file is much more convenient.