On small screen the overhead of the menu line, bottom status line and left
layer selection bar is just too expensive. Since 1.1.2, the gtk hid can
be switched between the usual setup and a so called "full screen mode"
where most widgets are hidden, leaving much more screen space to the
editor widget. There's a FullScreen() action that can set or toggle
the state and a default key binding in gtk on the backslash ('\') to
toggle it.

<p><b> Further plans: </b>
Make hiding various parts of the GUI configurable. No plans to implement
it for the lesstif HID (it's in full-screen mode constantly anyway).