Apple has released OS X Mountain Lion 10.8.5 Supplemental Update with a couple of sleep-related fixes, including a bug that could cause external drives to be ejected after your Mac goes to sleep and a problem that prevented HDMI audio from working after wake from sleep. The supplemental update also fixes an issue that prevented some applications from accessing the FaceTime HD camera on mid-2013 MacBook Air models and a bug with USB Bluetooth adapters. It’s available as a direct download from Apple’s Support Downloads Web page or via the Mac App Store. (Free update, 18.7 MB)
Customize Open/Save Dialog Sidebars
You can customize the sidebar in an Open/Save dialog the same way you can in a Finder window: you can reorder the position of items, drag them off into puff-of-smoke oblivion, and even drag a folder from the dialog's list into the sidebar.
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OS X Mountain Lion 10.8.5 Supplemental Update
Set up short abbreviations which expand to larger bits of text,
such as “Tx” for “TextExpander”. With the new custom keyboard,
you can expand abbreviations in any app, including Safari and