Performa users can go ahead and install System Update 3.0 on their System 7.1 equipped Macintosh Performas. A helpful project manager within Apple's Performa division confirmed for us that the update has been approved for Performa models running System 7.1P, 7.1P1, 7.1P2, 7.1P3, 7.1P4, 7.1P5 and 7.1P6. The update is not designed for use with System 7.0.1 or its Performa equivalent, so Performa 200 and 400 owners who haven't updated their system software should not install System Update 3.0. [MHA]
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-]).