See manpage and http://cwstudio.sf.net/

Retro User Interface Help:

	* F1/1 - help
	* F2/2 - save to WAV file
	* F3/3 - reset parameters
	* F4/4, SPACE - regenerate random
	* F5/5, ENTER - play
	* F6/6 - stop
	* F7/7 - pause
	* F8/8 - noise mode
	* F9/9 - freq
	* F10/0 - exit
	* F11/- - detune/qsb
	* F12/= - mode (chars/words/callsigns)
	* UP/DOWN - groups
	* ? - bits
	* LEFT/RIGHT - char spaces
	* Shift-LEFT/RIGHT - word spaces
	* HOME/END - charset
	* / - samplerate
	* PGUP/PGDN - tempo
	* BACKSPACE - shape
	* INS/DEL - signals
	* Q - hand
	* S - sweep
	* A - AGC
	* E - even harmonics
	* H - hum
	* O - odd harmonics
	* Shift-HOME - dash length
	* Shift-END - space length