Control-@		0.	null
Control-a		1.	beginning of line (tcsh/bash)
Control-c		3.	interrupt
Control-d		4.	end of file (unix/linux)
Control-e		5.	end of line (tcsh/bash)
Control-g	\a	7.	alert/bell/beep
Control-h	\b	8.	backspace/rubout
Control-i	\t	9.	tab/next field/horizontal-tab
Control-j	\n	10.	new-line/linefeed
Control-k	\v	11.	vertical tab
Control-l	\f	12.	form feed
Control-m	\r	13.	cariage return/enter
Control-o		15.	toggle output on/off
Control-t		20.	new window, vms:mini-systat
Control-z		26.	unix:suspend process, vms:end of file