I'm sure one of the longtime Apple fan boyz will correct me if I have this wrong. :-) The gist of it is the Apple file system has that baked in. Files have an internal structure for both metadata (i.e. the "resource" fork) and data so therefore no dependency on file extensions.
-- rk -----Original Message----- From: ProfoxTech [mailto:profoxtech-boun...@leafe.com] On Behalf Of John Weller Sent: Friday, January 17, 2014 12:39 PM To: profoxt...@leafe.com Subject: RE: CryptoLocker Idle curiosity only - how does an Apple know which application to use to open a file? I also immediately uncheck the hide extensions box! John _______________________________________________ Post Messages to: ProFox@leafe.com Subscription Maintenance: http://mail.leafe.com/mailman/listinfo/profox OT-free version of this list: http://mail.leafe.com/mailman/listinfo/profoxtech Searchable Archive: http://leafe.com/archives/search/profox This message: http://leafe.com/archives/byMID/profox/DF1EEF11E586A64FB54A97F22A8BD04422A3145058@ACKBWDDQH1.artfact.local ** All postings, unless explicitly stated otherwise, are the opinions of the author, and do not constitute legal or medical advice. This statement is added to the messages for those lawyers who are too stupid to see the obvious.