Hello friends

I've just got my copy of Geekatplay training. But I noticed something weird that I don't have the Terrain Functions they have on their version of Vue 6 xStream (I'm using it too). Here are the screenshots; white one theirs, gray one mine. I tried to make the same with myself with function editor. The mentor lady using this functions on a procedural terrain.

Do you guys know where can I buy those ?

Thanks in advance...