similar to
windows (e.g., "Ctrl-s" to save the current file).  Selecting "none"
will disabled all default bindings.  Bindings to not take effect until
restarting TkGate.

<li><b>Smooth Scrolling:</b> If this option is enabled, scrolling in
the main window will be performed using bitmap copies rather than by
using redisplays significantly improving scrolling performance.  If
your X server has problems with bitmap copies, you can disable this
feature.

<li><b>Region Update:</b> Controls the screen redraw algo