Markers

Keyboard shortcut
Function
MM
Inserts a time marker at the current playhead position.
ControlMControl-M
Adds a region marker for the duration of the selection.
OptionControlMOption-Control-M
Adds time markers at the beginning and end of the selection.
OptionBOption-B
Inserts a beat marker at the current playhead position.
CommandOptionMCommand-Option-M
Displays the Details tab for the selected marker.