This short cut applies many Pro Tools functions to all tracks in the session at once. i.e. mute all tracks, create a send on all tracks, etc.
For more great Pro Tools tutorials, info and tips & tricks and check out
The Ultimate Pro Tools Course... Only $97 for a limited time!! (regularly $197)
Over 12 hours of Pro Tools tutorial videos for beginner to advanced Pro Tools users.
The Ultimate Pro Tools Course
https://ultimateguidetoprotools.com
To book a one on one tutorial or Pro Tools support session go to www.protoolsservices.com.