You can create and manipulate geometry directly in the work area.
The Robot is replaced by an arrow manipulator and a ruler appears. You can use the both the manipulator and the ruler for further manipulations.
You can use the following as a reference element:
A shaft is created about the reference element and the Shaft.x node is added to the tree.
A groove is created about the reference element and the Groove.x node is added to the tree.
For more information, see Copilot.