MGoumas: Vue crashed several times for me also. I could not find any locic behind the crashes, one simply clicked another window and 'BOOM' down it goes ;) However, if I worked slowly giving changes time to be calculated, not clicked outside the function editor once it was opened and saved a lot it was possible to get some work done. The procedural terrain seems to be unstable. You can also expect some strange behavior from the views. A curl is where the top extends beyound the rest of the wave is probably impossible to do with a procedural. Theoretically it should be possible to at least make the wave more steep on one side than the other. The problem to do that for a procedural terrain is that the only source is the position, I think one would need something like an orientation in order to make the two sides different. The only other way I can think of is to maybe let medium grey define the top of the wave and then use a filter to make booth black and white into the wallys and to controll the shape of it. Just thinking about of it makes my brain boil over. I mean thinking about doing this from a straight greyscale as a sawtooth is one thing but from a fractal!!!! However, don't trust me to much about this, I dont even know what half of functions in Vue5 does.