Short description of CastlePaste PRO 2.40.1: CastlePaste PRO allows you to easily paste anything you want into the program you are running. CastlePaste PRO follows the currently active window, so it is always there when you need it. No more switching between windows to cut and paste. CastlePaste PRO is not just another Clipboard extender, it is a different way of dealing with items that you want to paste into applications.