Ratpoison is a simple window manager with no large library
dependencies, no fancy graphics, no window decorations, and no rodent
dependence. It is largely modeled after GNU Screen, which has done
wonders in the virtual terminal market. All interaction with the
window manager is done through keystrokes. ratpoison has a prefix map
to minimize the key clobbering that cripples EMACS and other quality
pieces of software. All windows are maximized and kept maximized to
avoid wasting precious screen space.