Thank you so much for the trick. This is very helpful, Dave.

Is there a way to make clipping mask over an object and model view port in Layout? Say, i have a view port with a shape of material hatch over it, and i want to make clipping mask over both of the object to show a partical detail of it.

So far i can only creat clipping mask over a viewport. But it won't work with above case.
Thank you in advance.