Right now I wish I could figure out how to remove a texture from an area completely, because when I paint over an area with the "NONE" texture, there are still textures there that appear as I'm erasing. These textures cause problems with blending new textures in. I am trying to figure out all the nuances of the way these textures work and it is a bit frustrating.

Does anyone understand the inner workings behind this mysterious landscape texturing stuff? I'd like to know how many textures are stored in a cell, an explanation of what happens when you paint over with x texture and y texture and it causes z texture to appear or an obvious cell border appears where the textures wont blend together or the texture wont change at all until you paint over with another texture that I can only guess is used in an adjoining cell...?

I know it has something to do with the limit of how many textures can be used in a cell and how they blend together, but I am trying to figure out the logic behind why the textures do what they do and any tips from the veterans here on retexturing areas and blending different textures in, how many textures you can use, etc. would be very much appreciated!

Oh, no, don't get up, that's okay. I figured this one out on my own. B)

Aparently "I" brings up Texture info for the Quads (wow - didn't realize the texture info stored there was so complex). Still not sure how it all works together, but selecting a listed texture there and pressing "DEL" apparently gets rid of it.

Another interesting tidbit:
You can replace a texture by right clicking on it in the Info screen and select a replacement texture. In this way, you can replace the first texture in the list which is usually hard to get rid of. I think this is the texture that sometimes appears when you try to paint on a new texture and you already have too many in the quad. So if you want to say, replace the whole ocean floor in a section with a new base texture, you can hit info, right click on the base mud or whatever texture and replace it. You have to do this for all four quads in the cell, but it might be easier than painting over it, depending on how many other textures you have there.

Thanks for the right-click tip! Didn't know about that one, and I've been using it a long time.