Hi,
Personnaly, i'm never using the HTML Scala docs, but i'm always using the intellij navigation utilities to look around. Anyways, i think that's right to say it lack comments.
I would say, comments saying basicaly the same than what the code express itself in a clear manner in the next 10 lines is counter productive.
I'm sorry, currently, there is no guidelines, i would just say to avoid over commenting things :D
Thanks :)
What is your PhD work ?
Charles