what does (MM) mean?

Couldn't see an explanation on the Apple iPad comparison chart @ http://support.apple.com/kb/HT5452#ipad4

Needs a link there... for the A1460 on the iPad (4th generation) Wi-Fi + Cellular (MM)

cheers,

I may buy one if I can understand the tech speak.. We have a 3rd Gen one and 4 other WIN machines here from WIN98, XP, Vista, to Win7 !!

Bill