Programmer's Key is a great INIT/Extension that lets you restart your machine or jump into a Debugger from the keyboard. This is cool, especially if your computer doesn't have "Programmer's Keys" installed (i.e., Macintosh IIsi). To Interrupt hold down the Command key and hit the PowerKey. To Reset hold down the Control key (or tab)- and hit the PowerKey. To Restart hold down the Command key and Shift key - and hit the PowerKey. To ShutDown hold down the Command-Shift-Option keys - and hit the PowerKey.