DMU_Demo (ver unknown) Free demonstration I offer this software ONLY because monitor test patterns are critical tools for properly adjusting the front-panel controls of your monitor. A properly adjusted monitor is not just a precaution against eye-strain, but necessary in order to view software as the programmer intended! The DMU_Demo program is a FREE demonstration of the Display Mate Utilities for DOS. The actual utilities (still being sold) are very comprehensive. As monitor setup utilities for DOS of any kind are difficult to locate, I am reluctantly offering this demo software to at least give you something to use to adjust your monitor. Pressing the F2 key gives some basic test patterns that will help you to set your monitors contrast, brightness, and (640x480) size/position front-panel controls.