Xara Xtreme has several ways of using objects to "mask" or "clip" other objects. You then see part of the objects through that mask.

ClipView is one of these methods, but it is different from the others because it is dynamic. It 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 while the window object remains visible.
Please install Flash® and turn on Javascript.