Using ClipView
ClipView lets you use an object as a "window" onto other objects. You see only those parts of other objects that are within the window. We call this creating a ClipView. You can move the window object to change your view. (The window object remains visible.)
The original objects:
With ClipView applied (the blue ellipse is the window object):
Note:
"Paste inside" is the term used in some other packages for this feature.
What do you want to do?
Movies