If you haven't seen this already you can start here with the original
proposal:
http://wiki.axiom-developer.org/AxiomUI
Then you can view the source code online at:
http://wiki.axiom-developer.org/axiom--GUI--1
The actual source archive can be retrieved via
% tla get axiom--GUI--1
For details of tla see:
http://wiki.axiom-developer.org/ArchUsage
I think the developer Kai Kaminski is still subscribed to this
list so if you ask specific questions he might be able to help.
Otherwise, I will see what I can answer.
Thanks for your interest!
Regards,
Bill Page.