UPSIDE DOWN [file: Inverter] Inverter is from H. Shaw of Ayreshire and causes all the characters to be printed upside down! Enter the program and run it. The only message you should get is a "return without GOSUB" error message, but don't panic, all is well, it is simply written in this form so that it can be MERGED into a program and called by a GO SUB 9900. Once this has been done then it can be switched on and off by using RANDOMIZE USR 64290/64335. A program which caused much comment and confusion in our office when we left a Speccy in upside down mode for a while and just for the fun of it we make it our "Shortcut of the Month".