ConTRoL Characters:

	CTRL-W : deletes the current command line word you are typing
	         (word=any sequence of non-blank characters).
	CTRL-D : end-of-file character.
	ctrl-C : interrupts current foreground process (In mail two ctrl-c
	         characters kill the mail message and save it in dead.letter)
	CTRL-S : suspends output being printed to screen.
	CTRL-Q : resumes printing of suspended output.
	CTRL-R : moves to next line and redraws command line.
	CTRL-H : erases character just typed on command line.

	CTRL-S and CTRL-Q are used to control the flow of output to the
	terminal. CTRL-S tells the system not to send any more data to the
	screen until a CTRL-Q is pressed. You can use these to control fast
	scrolling output. Sometimes you press CTRL-S by mistake and your
	terminal appears to be frozen. Try pressing CTRL-Q first when your
	terminal appears stuck to cancel any mistakenly pressed CTRL-S
	(extra CTRL-Q's do not cause any harm).