I found plenty of info on this for Safari 3, but things have evidently changed in version 4. I just happened to stumble upon the answer by experimenting, so posting it here for others.
A:
For version 4, open Safari from the command prompt with the switch: /enableInternalDebugMenu
e.g. "C:\Program Files\Safari\Safari.exe" /enableInternalDebugMenu
For version 3, the switch is: /enableDebugMenu
Note: You only need to do this once -- Safari will remember the setting.
Dave
2010-06-09 20:09:41