maxTextureND size units?

What unit is used for maxTexture1D, maxTexture2D and maxTexture3D? bytes? char*4 words? Number of items independent of size?
The 3.2 toolkit only uses ‘size’ in the description which is a little ambiguous.

Is the number returned the max size per texture or total for all textures of that dimension?

I can’t seem to find a precise answer.

Pointers to documents accepted at Par.
– Jebnor