http://www.openbsd.org/faq/faq11.html
This manual for example does not say what should be in this file?
Or this is the answer :
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startx(1) looks for the file .xinitrc in the user's home directory. .xinitrc is usually a shell script, which can start as many X "client" (applications that use X) programs as desired. When this script exits, the X server shuts down. Generally, most of the programs run by this script should run in the background, though the last one should run in the foreground (typically the window manager); when it exits, the script will exit, and X will be shutdown.
In the simplest case, this can be as little as just the name of the window manager you wish to invoke:
cwm
Or you can get a little more fancy:
xconsole -geometry -0+0 -fn 5x7 &
oclock -geometry 75x75-0-0 &
xsetroot -solid grey &
cwm