Second display

[Anthony Yeo]

I have been told by a(n un)reliable source at work that 10.3.4 
disables the option to turn off the LCD display when a Ti is 
connected to an external display.

Is it possible to actually turn off the internal display for the 
powerbook while connected to an external display ie another monitor 
or a data projector.  You would need to be in mirroring mode I 
gather. What else do you need to do.

Thanks

Ti 400 G4 X 10.3.3