Viewport Editing Tricks. this podcast will show you some tricks to speed up editing viewports.
podcast 100 – Viewport Crop Improvements Vectorworks 2010
When you change the crop area of a viewport, it can be a real pain, because you dont know how big to make the crop. If only you could see the drawing outside the crop… Well, now you can, and you can see it in grey so you see where the crop is, and where it should be.