Seven Unsung Built-In Gems of Mac OS X - 1 views
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OS X's Wi-Fi Diagnostics tool. That's because it's hidden away. To get it, Option-Click
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You can sign PDF documents with your webcam, annotate files, fill out forms, and even insert new pages into a file.
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Ink is OS X's handwriting recognition app that only appears as a preference pane when you connect a graphics tablet to your computer.
