Part Design workbench, for the construction of classical geometric shapes.

Sketcher workbench, the construction tool and constraint of sketches, opened directly by Part Design when necessary and then closed.

 Screen areas in  PartDesign and  Sketcher WB :

0 : Working window

1 : Drop-down menus

2 : Toolbars

3 : Navigation cube

4 : General axis system
     of the working window

5 : Actual size
     of the working window

6 : Information
     and setting area

7 : Tree
     or construction timeline
     of the geometric model