Many parameters of the vi editor are controlled by option
	settings: search modes, margins, tabs, line numbers, etc.
	To set these modes the way you like, you can modify the
	values of these options.

	There are two ways to set the value of an option: interactively
	or thru initialization.  The environment variable `EXINIT' is
	used by vi to set the initial option values.   You could have
	a line in your ".login" file like this:

	  setenv EXINIT 'set magic ignorecase nowrapscan shiftwidth=8'

	to set the logical options magic, ignorecase, and wrapscan, and
	to set the numerical option shiftwidth.

	You can also set options while in the vi edit session.  Just
	type colon ':' and to the prompt type:

		set autowrite

	to set the autowrite option.

	Note that setting options is done in "last line" state.

	Here is a list of useful options, numerical options are 
	followed by a '=n'.  You set their value with the `=###'
	construct shown above.  Boolean options are reset by preceding
	their name with "no" (e.g. "nomagic").

	  autowrite	- write buffer before changing files

	  lisp		- set up lisp mode

	  ignorecase	- ignore case of letters in searches

	  magic		- allow pattern-matching expression searches

	  number	- number lines

	  redraw	- simulate a smart terminal

	  shiftwidth=n	- set shift-command widths to n

	  showmatch	- show matching parentheses as they are closed

	  wrapmargin=n	- wrap lines n columns from right margin


	Personally, I prefer the following options combination:

	  setenv EXINIT 'set redraw noslowopen showmatch magic optimize'

	For a complete list of options, get into vi and type ":set all".