OS X 'Silent' X11

I like OS X's X11 implementation.  It allows X applications to rather cleanly mesh with the OS X environment.  However, when setting up X11 apps for end users X has a habit of popping up a terminal window.  Instead of making users close this window all the time, place a plain text .xinitrc file in their home directory with this line and only this line:

exec quartz-wm

This will disable xterm from starting when X starts.