Keys in the graphical frontends
During the graphical emulation, you can use special key combinations from
the following table to change modes. By default the modifier is Ctrl-Alt
(used in the table below) which can be changed with -display suboption
mod= where appropriate. For example, -display sdl,
grab-mod=lshift-lctrl-lalt changes the modifier key to Ctrl-Alt-Shift,
while -display sdl,grab-mod=rctrl changes it to the right Ctrl key.
- Ctrl-Alt-f
- Toggle full screen 
- Ctrl-Alt-+
- Enlarge the screen 
- Ctrl-Alt--
- Shrink the screen 
- Ctrl-Alt-u
- Restore the screen’s un-scaled dimensions 
- Ctrl-Alt-n
- Switch to virtual console ‘n’. Standard console mappings are: - 1
- Target system display 
- 2
- Monitor 
- 3
- Serial port 
 
- Ctrl-Alt-g
- Toggle mouse and keyboard grab. 
In the virtual consoles, you can use Ctrl-Up, Ctrl-Down, Ctrl-PageUp and Ctrl-PageDown to move in the back log.