Here it is, by popular, frustrated demand: the master list
of every secret (or not-so-secret) keystroke in Mac OS X Lion, including
all the keys you can press during startup. Clip and post to your monitor
(unless, of course, you got this book from the library).
Note
For the most part, the following list doesn’t include the
keystrokes already listed in your menus, like -P for Print, -S for Save, and so on.