1.Why is there not a CAD-Line in the Base-Part?

We do not want you to automatically add Joints to the Origin of the Base-Part.

2.Why?

For the Base-Part, we have found it to be useful to add Points and Lines that are not at the Origin or along the X-axis or Y–axis.

3.Why?

You can edit the dimensions later, and also add the dimensions to a Design-Set.

4.Why edit Points and Lines in the Base-Parts?

a)Edit the dimension and move the Joints, if the Points or Lines are used for Joints

b)Move the Plane and Mechanism-Editor in the Machine Frame, if a Line is used for a new Plane and Mechanism-Editor.