Edit Window and Mix Window Keyboard Shortcuts : Fades Dialog

Fades Dialog
 
Option-drag fade-in curve (“None” Link mode only)
Command-drag fade-out curve (“None” Link mode only)
Ctrl-drag fade-out curve (“None” Link mode only)
Option-click fade curve in crossfade fade window (“Equal Power” and “Equal Gain” Link modes only)
Alt-click fade curve in crossfade fade window (“Equal Power” and “Equal Gain” Link modes only)