Introduction to Pro Tools : Keyboard and Mouse Shortcuts : Global Key Commands

Global Key Commands
Some keyboard shortcuts apply to many functions in Pro Tools.
Track Functions
Pro Tools provides keyboard shortcuts for the following track functions:
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Apply action to all channel strips/tracks
Alt+ action
Option+ action
Apply action to selected channel strips/tracks
Alt+ Shift+ action
Option+ Shift+ action
List and Parameter Selection
Pro Tools provides keyboard shortcuts for the following items:
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Toggle item and set all others to same new state
Toggle item and set all others to opposite state
Command-click item
Controls and Editing Tools
Pro Tools provides keyboard shortcuts for moving plug-in controls, faders and sliders, the Scrubber, and automation data.
 
Fine adjustment of sliders, knobs, and breakpoints
Hold Control while clicking the item
Hold Command while clicking the item