Mountain Lion can help you do more than organize your music library, compose and receive email, and work out the complex equations necessary to design a hamster capable of sustained flight. With the aid of a bundled application, it can ensure that you know about upcoming chiropractic appointments, a favorite grandchild's birthday, or the dreaded yearly visit from a particularly long-winded cousin. That application is Calendar.Related StoriesSteve Jobs movie showing online nowApple seeds third OS X Mountain Lion 10.8.4 beta to developers
