#1 Direct manipulation editing

[Adam Pease]

Create a direct manipulation interface for Sigma,
probably as a Java application, rather than jsp. This
would include, as a central feature, a hierarchy
browser that would support moving portions of the
hierarchy, creating new subclasses etc. Also valuable
would be a menu-based interface that would show a list
of valid slots for each class an allow the user to fill
out a table in order to instantiate a ground statement,
for example. The interface could be inspired by Protege
(see http://protege.stanford.edu/\), but without
Protege's frame-based language, that would be more
limited than the logic-based KIF language employed by
Sigma.

[Adam Pease]

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Note that since Protege is open source Java that if any
Protege code is separable and appropriate for this task, it
could be included directly