Ratpoison is a simple Window Manager with no fat library dependencies,
no fancy graphics, no window decorations, and no rodent dependence. It is
largely modelled after GNU Screen which has done wonders in the virtual
terminal market.  The screen can be split into non-overlapping frames. All
windows are kept maximized inside their frames to take full advantage of
your precious screen real estate.  All interaction with the window manager
is done through keystrokes.
