b   line breaks on (off: b-)		q   quit editor
d   delete line(s)			r   read file
e   edit a new file			s   substitute /old/new/
f   set file name			t   copy line(s)
g   globally if				v   globally if not
h   display help on named topic		w   write on file
	(currently: keys, sub, reg)	x   substitute interactively
j   join lines to make one			('.' to confirm)
k   mark line				/   delimit search string
m   move line(s)			?   delimit backward
l   list line(s)				search string
o   open line(s) for mods		!   unix command
	(^H for help in 'o')		=   line number
o:  replace line(s)			>   prompts off
o-  insert new lines			%   display surrounding context
o;  append new lines			&   .-15,.p (preceding context)
p   print line(s)			"   .+1,.+16p (following context)
