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[dosraider]

Dosbox? and Tutos?
And of course Dosbox WIKI

And if that's all too much the short dosbox manual:

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5. Special Keys:
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ALT-ENTER     Switch to full screen and back.
ALT-PAUSE     Pause emulation (hit ALT-PAUSE again to continue).
CTRL-F1       Start the keymapper.
CTRL-F4       Change between mounted floppy/CD images. Update directory cache 
              for all drives.
CTRL-ALT-F5   Start/Stop creating a movie of the screen. (avi video capturing)
CTRL-F5       Save a screenshot. (PNG format)
CTRL-F6       Start/Stop recording sound output to a wave file.
CTRL-ALT-F7   Start/Stop recording of OPL commands. (DRO format)
CTRL-ALT-F8   Start/Stop the recording of raw MIDI commands.
CTRL-F7       Decrease frameskip.
CTRL-F8       Increase frameskip.
CTRL-F9       Kill DOSBox.
CTRL-F10      Capture/Release the mouse.
CTRL-F11      Slow down emulation (Decrease DOSBox Cycles).
CTRL-F12      Speed up emulation (Increase DOSBox Cycles)*.
ALT-F12       Unlock speed (turbo button/fast forward)**.
F11, ALT-F11  (machine=cga) change tint in NTSC output modes***
F11           (machine=hercules) cycle through amber, green, white colouring***