I am testing the BIM features of V15: Creating walls, inserting windows etc.
The easiest way to insert a window in a wall is to work with a dynamic UCS (DUCS). The problem is that the positive Y direction of the DUCS does not always point to
the top of the wall (= the positive Z direction of the WCS). In some case the positive X direction of the DUCS points to the top. This depends on the orientation of the wall relative to the view. If you do not pay close attention you can end up with windows that are rotated 90 degrees.
Is there a way to control the orientation of the DUCS?