lesstif, the Motif Clone.

To install...

lesstif# mv lib* /lib
       # cp system.mwmrc /root/.mwmrc
       # ln -s /lib/libMrm.so.0.50 libMrm.so
       # ln -s /lib/libXm.so.0.50 libXm.so 
       # mv mwm /usr/X11/bin
       # mv xmbind /usr/X11/bin
       # mv Mwm /usr/X11/lib/X11/app-defaults
       # ldconfig

There's another file called .Xdefaults, you can put this in /root/.Xdefaults,
if you don't allready have a /root/.Xdefaults

Keep xmbind.html for reference.

You can call mwm from within X Windows, click to get the fvwm menu,
then click on [Exit fvwm] then click on [Start mwm]

There's not really any documentation, the system.mwmrc is small,
but I'm sure if you look around you can find a better system.mwmrc
file, at this point it's just another window manager in addition
to the main window manager fvwm.
 
      
