update_wdm_wmlist − updates the window manager list for wdm
update_wdm_wmlist [ window managers ]
update_wdm_wmlist uses update-alternatives to see which window-managers are available and updates the DisplayManager*wdmWm resource in the wdm configuration file (/etc/X11/wdm/wdm-config)
You can pass a list of window managers as arguments.
The script and this manpage were written by Marcelo Magallon <mmagallo AT debian DOT org> and later rewritten to use update-alternatives by Wichert Akkerman <wakkerma AT debian DOT org>. wdm was written by Gene Czarcinski <genec AT mindspring DOT com>.