There's no need to show the options to the users if they don't have the device or won't be able to perform certain tasks.
Earlier I've noticed that once I plugged the WACOM Graphics Tablet, the System Preferences shows two new options...
Ink (for Inkwell) and Pen Tablet.
(an early screenshot, not focused on Ink and Pen Tablet.)
Inkwell is Mac OS X's built-in hand-writing recognising software. The option will be available once you plug in a Graphics Tablet.
And recently, I noticed another option I haven't seen before... "High Definition".
My previous Macs do not have "High Definition" (HD) display, thanks to my new iMac, the display can display High Definition natively (without scaling).
UserAgent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X; en-US; rv:1.8.1) Gecko/20061010 Firefox/2.0
