The Prolog Navigator provides an explorer-like view of a directory holding Prolog files. Prolog-files can be expanded, showing their contents. The screen-dump shows a loaded file bitem.pl containing three XPCE classes (boxes). Inside class btext_item there is a predicate to_text/3 referencing 4 other predicates.

Menus provide Consult, Edit, access to the Manual and Debugger.