ARROW.COM - documentation by Andrew Marchant Shapiro - 4/26/88
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I found ARROW.COM a few days ago.  It is fairly self-documenting
(type 'ARROW' <CR>), but I thought I ought to include a few points.

What ARROW does is to poke new values into the Kaypro arrow (or
vector) key locations.  What these values are depends upon how it is
invoked.  ARROW /G invokes standard MicroPro arrow definitions -- ^S,
^E, ^D, ^X.  ARROW /F invokes Perfect Software key definitions -- ^B,
^P, ^F, ^N.  This is of great advantage to anyone who uses software
from both companies on a Kaypro, since it allows an easy transition
between definitions that takes no memory and is completely transparent
to the computer and user.

Now, as originally distributed, ARROW toggled between MicroPro
definitions and Perfect Writer's 'secondary' definitions, which are
identical to the standard CP/M cursor keys:  ^H, ^J, ^K, ^L.  I
altered ARROW to work with the primary PW set since I had rebound the
secondary set to perform other functions (and to make PW more
EMACS-like).

Changing the key definitions that ARROW uses is fairly trivial:  just
inspect the last record of the program for the two sets (in hex) and
change them as you like.  This seems to work just fine.

Now -- some good news:  ARROW.COM seems to work on ALL Kaypro machines
with the exception of the U-ROM (very late graphics machines).  It was
apparently set up to work with the 2'84 and 4'84 machines that came
with the F and/or G ROMS, but it works fine on my machine, which has a
TurboROM in place.  If it works on an '83 (as I suspect it will) all
the better.  I have it on good (read:  reputable dealer) authority
that ALL Kaypros used the same locations for the vector keys EXCEPT
the U-ROM machines (U-ROMS should be replaced at once anyway!). 
Unfortunately, they did not do the same with the number pad, so
anything that redefines that is intensely hardware-specific.

This program will probably be most useful to people like myself, who
find that the Perfect Writer EMACS-like editor is the cat's PJs, but
who find that the rest of the world expects WurstStar like code. 
There are other alternatives, but this is (probably) the most elegant.