api/view api/model api/painters api/tools
The central part for Gaphas is the View. That's the class that ensures stuff is displayed and can be interacted with.
api/handles api/connections api/variable
One of Gaphas' USP is it's the way it handles connections and the constraint solver.
api/matrix api/geometry
Finally there are classes and modules that make up the building blocks on which Gaphas is built: