NAME
vi - screen oriented (visual) display editor based on ex

SYNOPSIS
vi [ -t tag ] [ -r ] [ +command ] [ -l ] [ -wn ] name ...

DESCRIPTION
Vi (visual) is a display oriented text editor based on ex(1).
Ex(1) and vi run the same code; it is possible to get to the
command mode of ex(1) from within vi and vice-versa.

The Vi Quick Reference summary and the Introduction to Display
Editing with Vi in the MachTen Text Processing manual provide full
details on using vi.

FILES
See ex(1).

SEE ALSO
ex (1), edit (1), "An Introduction to Display Editing with Vi" (see
the MachTen Text Processing manual)

AUTHOR
William Joy
Mark Horton added macros to visual mode and is maintaining version
3

BUGS
Software tabs using ^T work only immediately after the autoindent.

Left and right shifts on intelligent terminals don’t make use of
insert and delete character operations in the terminal.

The wrapmargin option can be fooled since it looks at output
columns when blanks are typed. If a long word passes through the
margin and onto the next line without a break, then the line won’t
be broken.

Insert/delete within a line can be slow if tabs are present on
intelligent terminals, since the terminals need help in doing this
correctly.

Saving text on deletes in the named buffers is somewhat
inefficient.

The source command does not work when executed as :source; there is
no way to use the :append, :change, and :insert commands, since it
is not possible to give more than one line of input to a : escape.
To use these on a :global you must Q to ex command mode, execute
them, and then reenter the screen editor with vi or open.