In the 6.1 release notes, it is mentioned that there are
"Advanced lighting functions including spherical harmonic and Perlin noise generation
Now, I've got6.1.2.041, and for the life of me, I can't find any reference to Perlin noise generation in any other documentation other than the release note. Now I'll admit I don't know much about Perlin noise generation in the first place, hence I'm struggling a bit here.
Can someone point me in the right direction, not asking for a solution really, just a pointer to get me started.