What is E then E keyboard shortcut for?

Popular programs using this shortcut

What this shortcut does in different programs?

1. Command & Conquer: Generals - Select all units of same type on map  
2. Adobe After Effects 2021 - Show only expressions  
3. Autodesk Revit - ELECTRICAL EQUIPMENT / Places electrical equipment, such as panels and switch gear.  
4. Star Citizen - Roll Right (while Prone)  
5. Arma Reforger (PC) - Toggle Lean Right  

All programs

All programs using this shortcut, by category.