#339 Key alignment

[Anonymous]

Currently, the horizontal and vertical keywords for 'set key' control the overall layout of the key, so that for items A-J,
set key horizontal
might give
A C E G I
B D F H J
while
set key vertical
will give
A F
B G
C H
D I
E J
(subject to space constraints). It would be nice to have another pair of keywords, e.g., Horizontal and Vertical, so that the sorting order changes (it is Vertical by default). With this new keyword, we would see
set key horizontal Horizontal
output
A B C D E
F G H I J
Thanks!!