#: 6041 S10/Tandy CoCo
    12-Aug-90  17:26:19
Sb: #5893-New gfx2
Fm: Kevin Darling (UG Pres) 76703,4227
To: WAYNE LAIRD 73617,3042

Thanks Wayne!  You meant grfdrv, not gfx2, yah?  Grfdrv had some orphan
(unused) code left in it where they obviously meant to speed up horizontal line
draws by setting entire bytes (instead of just pixels which could be half bytes
or even single bits in 2-color mode, right?) whenever possible... like on a
longer line run.  All I did was, well, throw out their stuff and write my own
version of what they had intended to do .

Vertical lines always set the same bit positions within a byte, and so were
already inherently as fast as they could go. If that makes sense ;-)