Useful vi options

Option              Default                 Action

autoindent          noai                    automatically indents each                                          
                                            line of text

number              nonu                    prefix lines with line number

term                $TERM                   sets type of terminal to use

scroll              scroll=11               sets number of lines scrolled
                                            with ^d and z

shell               sh=/bin/sh              defines the shell used for UNIX
                                            commands. This value is taken
                                            from the SHELL environment
                                            variable.

shiftwidth          sw=8                    sets the number of spaces for
                                            use with autoindent

wrapmargin (wm)     wm=0                    specifies number of spaces lines
                                            are broken before right edge of
                                            the screen