ways to end X Window?

[Xu Qiang]

David Adam wrote:
> Finally, you can Ctrl-Alt-F(1-8) to go back to the virtual console
> which you started X from, and hit Ctrl-C.

Just enabled xdm, and now I log in through X Window (not from the console), and press Ctrl-Alt-F7 to go back to console (in a state of logoff), but from there (after logging in from console) I don't know how to go back to X Window. :(

Any suggestions?

thanks, 

Regards,
Xu Qiang