Other shortcuts:
[L]+d: status line on/off
[L]+[R]+dpad up/down: move displayed gfx up/down
[L]+[R]+dpad left/right: stretch/narrow displayed gfx horizontally
[L]+[R]+1,2,...,8: switch display mode
[L]+[R]+9/0: add/remove 1 line (e.g. 320x240 => 320x241)
[L]+ COMMA/PERIOD: cut/uncut...