XFree86 uses similar console switching keys as the SCO R4 and R5
servers.
Ctrl-PrntScr takes you to the next console along
from the one X is running on. If this is the last console it will take
you to console 1.
Ctrl-Alt-FXX, where XX is a function
key between F1 and F12 will switch you to the console
number assigned to that function key.
F1 corresponds to tty01 (or console 1),
F2 corresponds to tty02 (or console 2) etc.
Unlike the SCO X server, the XFree86 "kill me now" key is Alt+Ctrl+Backspace.
This does not ask for confirmation, it simply kills the X server as
quickly as possible and so use wisely and this may cause applications
to terminate in an unpredictable way.
You can set the DontZap option in the ServerFlags
section of your XF86Config file to disable this feature.