Apple Power Macintosh 9500 Series - Manual (Page 153)

Special key combinations
If difficulties with your mouse or computer don’t allow you to use standard
methods of quitting a program or restarting your computer, you can try using
these special key combinations.
To do this... …press this key combination
Force a program to quit x -Option-Esc
Force the computer to restart x -Control-Power key
Here are other key combinations you may find useful.
To do this... …press this key combination
Start a “debugging” application used by software programmers* x -Power key
Start the computer from a CD-ROM disc C key (at startup)
Rebuild desktop Shift key (while starting up)
release, then hold Option- x
*If you do not have a debugging program installed, your screen displays a caret prompt (>). To return to the desktop,
type “G.”
143 Special Keys on Your Keyboard