VI(1) General Commands Manual VI(1)
vi - screen oriented (visual) display editor based on ex
vi [ -t tag ] [ -r ] [ +command ] [ -l ] [ -wn ] name ...
Vi (visual) is a display oriented text editor based on ex(1). Ex and
vi run the same code; it is possible to get to the command mode of ex
from within vi and vice-versa.
The Vi Quick Reference card and the Introduction to Display Editing
with Vi provide full details on using vi.
ex (1), edit (1), ``Vi Quick Reference'' card, ``An Introduction to
Display Editing with Vi''.
Mark Horton added macros to visual mode and is maintaining version 3
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 intelli‐
gent 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.
3rd Berkeley Distribution April 29, 1985 VI(1)