Another key update is Microsoft Exchange, which integrates the Mail, Address Book, and iCal apps. The Mac App Store will install with your update as well. There is also a new zoom slider that allows you to zoom in on icons while you search for files. You can preview documents with multiple pages and play QuickTime movies from within the Finder window thanks to the addition of the enhanced icon view. The Finder itself has very few changes in terms of interface, but there are some big changes to the way files behave, which makes them easier to use. Finder has been redesigned from the version in Leopard to make file-viewing and browsing much simpler, and a complete overhaul of QuickTime (now updated to QuickTime X) gives the program a cleaner interface and recording tools. The Snow Leopard software update enhances the usability of common programs, like Finder and QuickTime. The Snow Leopard operating system update also enhances the performance of the Leopard Mac OS system and improves efficiency across a number of programs. This upgrade is full of small updates to the existing features of Leopard, making them much more user-friendly. Snow Leopard is not a complete system overhaul, but rather a collection of smaller refinements to make your Mac run more smoothly and improve compatibility between apps. Mac OS Snow Leopard is designed to work with Intel Macs. The Apple X Snow Leopard 10.6.3 software upgrade comes in DVD format to update your Mac computer from Leopard to Snow Leopard.

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