use by adding a Screen Blanker, a Desktop Pattern Editor, a Sound Selector, and a Boot Setup Utility to GS/OS version 5.0 or later. Features:Phantasm - Gives your screen something to do through a variety of fun, attractive screen activities, including "Magic Molecules" and "Slimy Slugs."Graffiti - There's nothing wrong with the IIGS desktop, except it's boring. Graffiti gives you a variety of colorful desktop patterns to choose from, or you can create your own with the built-in desktop painter.Sonics - Customize your IIGS sounds, and assign special sounds for specific functions. And these aren't just beeps - they're fun and entertaining.Boot Master - Changing the configuration of all your IIGS drivers, and system components can be a pain. Boot Master makes it easy by putting all the controls for your IIGS drivers on one master control panel.