PX4 Screen Pager for Windows copyright รท 2000 R. Collins rcoll@rtd.com PX is a utility that increases the apparent size of your logical screen, by allowing you to choose between a selection of screen views. Each screen view, or "pane", may have it's own set of windows opened. For example, you may have a word processor opened on one screen, while another screen has an Internet browser open, and yet another screen has a spread-sheet active. This program is similar to the "pager" utility found on many Unix and X-Windows systems.