Working in the Timeline Window

Result	Windows Action	Macintosh Action
Starts/ pauses playback	Spacebar	Spacebar
Scrubs movie clip contents	Alt + drag current-time marker	Option + drag current-time marker
Scrubs audio	Control + drag current-time marker	Command + drag current-time marker
Moves current-time marker backward/forward 1 frame	Page Up/Page Down	Page Up/Page Down
Moves current-time marker backward/forward 10 frames	Shift + Page Up/Page Down	Shift + Page Up/Page Down
Moves current-time marker to start/end of timeline	Home/End	Home/End
Selects item above/below	Up arrow/ down arrow	Up arrow/ down arrow
Expands/collapses timeline view of selected objects	Right arrow/ left arrow or + (plus sign)/ - (minus sign)	Right arrow/ left arrow or + (plus sign)/ - (minus sign)
Displays a movie clip's timeline	Double-click	Double-click
Enables Hide/Lock/Shy for one object only	Alt + click Hide icon/Lock icon/ Shy icon	Option + click Hide icon/Lock icon/Shy icon
Displays anchor point attribute	A	A
Displays position attribute	P	P
Displays rotation attribute	R	R
Displays scale attribute	S	S
Displays object opacity attribute	T	T
Displays animated attributes	U	U
Displays skew attribute	W	W
Adds attribute to current view	Shift + A, T, P, R, S, W, U	Shift + A, T, P, R, S, W, U