Mac OS X Shortcut Keys

Newer Mac laptops (MacBook Pros made after February 2008, MacBooks after November(?) 2007, MacBook Airs), and the Aluminum keyboard, have a different layout for fn keys. Some keys have been added, while the numlock key has been removed and the display mode key has been integrated into the brightness key (see combinations in parenthesis)

F1	decrease brightness (command+F1 changes display mode, option+F1 brings up display prefs)
F2	increase brightness (option+F2 brings up display prefs)
F3	exposé (F3 shows all windows, control+F3 shows app windows, option+F3 brings up exposé prefs, command+F3 shows desktop)
F4	dashboard (option+F4 brings up exposé prefs)
F5	decrease keyboard brightness for backlit keyboards (option+F5 brings up keyboard prefs)
F6	increase keyboard brightness for backlit keyboards (option+F6 brings up keyboard prefs)
F7	media navigation backwards (like hitting back on Apple Remote)
F8	media play/pause (like hitting play/pause on Apple Remote)
F9	media navigation forwards (like hitting next on Apple Remote)
F10	mute volume (option+F10 brings up sound prefs)
F11	decrease volume (option+shift+F11 for incremental decrease, option+F11 brings up sound prefs)
F12	increase volume (option+shift+F12 for incremental increase, option+F12 brings up sound prefs)

If you want to use these function keys for standard keyboard shortcuts, you must use the fn key, located in the lower-left corner of the keyboard. For example, to use Spaces on these keyboards, you must press fn-F8; to shift between all open windows in all applications, you must press ctrl-fn-F4; etc.

This behaviour can be altered in the Keyboard tab of the Keyboard & Mouse preference pane, so that hardware functions (like screen brightness) require pressing fn, and standard keyboard shortcuts (like Spaces) work without the fn key.

Application specific shortcuts

iPhoto

command-option-backspace	delete pictures from the library from within an album
command-1,2,3,4,5	rate picture

iTunes

command-option-backspace	delete songs from the library from within a playlist
command-B	show browser
command-L	highlight currently playing track
command-shift-R	reveal currently playing track in Finder (was command-R until iTunes 10)

MS Office 2004

Word 2004

Insert Bullet
Clear Formatting	Cntrl + Spacebar

Powerpoint 2004

page down while in normal view, cursor in the slide window (not notes or outline)	next slide
F6/fn-F6	toggle between Slide, Outline, and notes windows
control-shift-S	start slide show from first slide
control-shift-B	start slide show from current slide

Powerpoint 2008

F6/fn-F6 toggle has a bug where it occasionally jumps to the first slide instead of toggling cursor.