FreeDiagram 
This ModelSlot represents access to a Diagram without any DiagramSpecification conformance
Behaviours
[`DropScheme`](DropScheme.html) : No documentation yet
[`DrawRectangleScheme`](DrawRectangleScheme.html) : No documentation yet
[`LinkScheme`](LinkScheme.html) : No documentation yet
[`DiagramNavigationScheme`](DiagramNavigationScheme.html) : No documentation yet