There is one(1) Model-Editor. It is equivalent to a General Assembly.
When you start MechDesigner, the active editor is the Model-Editor.
Note: You must use the Model-Editor to add a minimum of one Mechanism-Editor to a Plane. You can add the Mechanism-Editor to a fixed Plane, or you can add it to a new Plane that is offset from a fixed Plane.
Graphic-Area : shows the fixed Planes and Axes, and also Solid elements that are in the model.
Toolbar : to the left only of the graphic-area -see below
Name-tab : there is one Model-Editor and one Model name-tab, default name is Model
You can edit the Model element.
Menus and Toolbars: