This software has been tested on Intel 8088, 80286, 80386, 80486, and Pentium based microcomputers with Hercules, EGA and VGA graphics capability. Although this is a DOS program, it can be run from a DOS window in Microsoft Windows version 3.1 or later. A mouse is not required but it does make operating the software much easier. INSTEP can be executed either from a hard disk or from a floppy disk, but a hard disk is recommended. Printers that can be used are the HP LaserJet and DeskJet printers, the IBM X24 ProPrinter, the NEC PC-PR103A printer, or printers that can emulate these protocols.