Vertical as in ten to fifteen feet off the battlefield, or vertical in a 2D sense?Andur said:High pretty much always means vertical...
High means vertical. If it worked the way your example does they would have said "wide".Rechan said:Walls are "X long and Y high". Now, when they say "High", do they mean 3D wise (Into the air), or high as in, how many squares it fills width wise?
I.e. a wall that's 5 long and 3 high would be:
XXXXX
XXXXX
XXXXX
Not so. The eladrin, for instance, needs line of sight to teleport....and once teleportation becomes common, walls are pretty pointless...

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.