------------------------- How to Use VI
-------------------------- (Notes for Rice Astro majors)  vi and
emacs are the two editors of choice for unix machines. Both are
quick, versatile and powerful. Emacs has a few more bells and
whistles, while vi is available by default on every unix machine
I've seen. Because of its universal availability, I chose to
learn vi. Parts of the editor are a bit cryptic, but within a
day or two you should be pretty much over most of the learning
curve. No pain, no gain. And there is gain - you can really fly
through most editing jobs very quickly with vi. On Redhat unix
systems there is a command called vimtutor that you might try
for an interactive lesson. Of course, many web pages exist for
help as well.  You'll avoid most of the confusion surrounding vi
if you understand that it uses two modes, command mode, where
you tell vi such things as where you want to move in the file,
mark your location, delete words, find strings, etc., and insert
mode, where vi simply puts whatever