vi-commands

:vi - enter normal mode
i - insert
h - left
j - down
k - up
l - right
dd - deletes a line
dw - deletes a word
esc - back to
u - undo
yy - copy line
q - quit
n - next
p - prevous
w - write <filnavn>
:q - close current window
:r <filenavn> - read the specified file
:args - list the filesin the edit list
:last - edit the last file in the list