Thanks to author and programmer Mike Ash for this developer-focused explanation of Apple’s move to the 64-bit A7 chip in the iPhone 5s. In short, although details will vary by app, 64-bit code that takes advantage of new programming techniques can be faster and use less memory (though 64-bit apps use more memory in general). Plus, old 32-bit code can run on the A7 with no changes or performance penalty.follow link
Edit iCal Event Titles Directly
In the Leopard version of iCal, double-clicking an event shows a summary of the event, and to edit the name (or anything else), you must click the Edit button in the summary pop-up. To bypass the summary and edit pop-ups entirely, Option-double-click the event name. That selects the text for editing, and you can make any changes you want. Click outside the event to save your changes.
- ExtraBITS for 07 October 2013 (07 Oct 13)
What 64-bit Support in iPhone 5s Really Means