It looks like there are a few pieces from the previous wiki that didn’t make the migration.
Specifically, on the Write a GLSL Material page:
It looks like the refs for the following are currently missing:
TDInstanceTranslate()
TDInstanceScale()
I was sure these existed and ended up finding my way back to them by looking over some older projects. Would love to see them back - unless these have been deprecated in favor of a different approach.