RESULT
ACTION
Set layer-time marker
* on numeric keypad
Remove layer-time marker
-click marker
Go to previous visible layer-time marker or keyframe
J
Go to next visible layer-time marker or keyframe
K
Go to a composition-time marker
0-9 on main keyboard
Set and number a composition-time marker at the current time
+ 0-9 on main keyboard
Command Shift Option Key