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- Operator "Join Selected Tracks".
This operator joins all selected tracks to active track.
Hotkey is Ctrl-J.
- Operator "Select Grouped".
Now it's easy to select all locked/keyframes/etc markers.
Hotkey is Shit-G.
- Operator to jump to beginning/end of active path.
Hotkeys are Shift+Ctrl+Arrow Left/Right.
- Operator to copy color from active track to all tracks.