'Afternoon all, First I want to thank - Varian & Gebe - for their posted links, which explained a lot to me, in the use of Materials in Vue 4. Like I stated earlier, I am new to Vue 4, so I'm still searching for tips & tricks to make my learning process a little quicker. I really appreciate the pointers. 8 ^ ) Hi Smallspace, Actually, that's not really what I had in mind. I have & use TrueSpace 5, so I am familiar with what you are describing. I guess to simplify what I was looking to do, was to take a native Material in Vue & apply it to different sections of a terrain, that already has another Material applied to it. The Masking part of my question, was to be used for the smooth blending of the different Materials. In ZBrush, you can use several different Materials on one object, just by selecting the Material & painting it on the object in any location you want. I'm sure as I become more familiar with Vue 4, I'll be able to use the common sense that I was born with, & use my brain to figure these things out. I guess at times I get a little lazy, & look for the easy way out for learning a new software package. Ha Ha Ha. ; ^ ) Anyway, thanks to you all for your help & the time you took to answer my question. I hope some day, I may be able to repay the favor. Have a good one . . . Mark.