This section explains some differences you may encounter when using Hotkeys in Maya for Mac OS X.
Exposé hotkeys (F9, F10, F11) may conflict with preset Maya hotkeys. If you experience this problem, you can change the Maya hotkeys, or change the Exposé hotkeys in the System Preferences panel of the computer running Mac OS X.
Using the set focus hotkey (Alt ‘) to change the focus
If "Alt `" is used as the hotkey to set focus to the numeric input field, then it must be pressed twice to set the focus to the numeric input field. However, if another hotkey is used (instead of "Alt `") to accomplish the same functionality, then pressing the hotkey combination once is sufficient.