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Go Back and Forth Fast in Preview

If you're reading a PDF in Apple's Preview software, and you follow a bookmark or an internal link to move around within the PDF, you can quickly return to where you were by pressing the keyboard shortcut Command-[ (that's Command-Left Bracket). Or, you can choose Go > Back.

The command works iteratively, so you can go back to just the previously viewed page or if you issue the command again, to the page before that, and so on. There's also an equivalent Go > Forward (Command-]).

 

 

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QuickTime 7.4 Improves Security, but Not Enough

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Apple updated its media workhorse QuickTime to version 7.4 last week, fixing bugs and adding support for new iTunes features such as downloadable movie rentals. But the more important news is that this version squashes a handful of security holes that could allow remote attacks. However, a serious vulnerability discovered shortly before Macworld Expo demonstrates that Apple's engineers need to remain hard at work.

The QuickTime 7.4 update is available for Leopard (a 55 MB download), Tiger (a 51 MB download), Panther (a 50 MB download), and Windows (both XP and Vista, a 22 MB download).

The most recent exploit, not addressed in QuickTime 7.4, takes advantage of a hole in QuickTime's RTSP (Real Time Streaming Protocol) that could open a computer to a denial-of-service attack or possible remote code execution. (RTSP is not a new target; see "Protect Yourself from the QuickTime RTSP Vulnerability," 2007-09-07.) Because QuickTime is the underlying technology of iTunes, Macs and Windows computers running QuickTime are vulnerable. Anyone who uses iTunes or owns an iPod should update.

 

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