More maprestriction in next AC?

[Mael]

You have to remember that Cube 1 maps aren't truly 3D.

Someone explain this notion to me. Is this referring to the way lighting is done, that each cube's(And entity's) position on the X&Y axes is locked, both, or something else?

The only thing I can think of is there are two values(Or dimensions) that determine the height of each vertex in a map; cube height and vdelta. That and lighting is calculated without regard for position along the Z axis(It could be said walls "inherit" their light from the cubes next to them; the light from adjacent cubes is "stretched" over).

I hear this comment all the time and something about it rubs me the wrong way.