Not sure why Avid doesn't put this out. The first document that pops up on the google search (touche!) is the key commands for Pro Tools 6.9 for MAC. The second is Pro tools 6.0 for Mac. Not sure how relevant those are to me since I'm on PC on version 11. But most may still apply. Here is another one, but MAC only:
http://keycommands.info/
For other programs as well.