Just a quick note to let you know that this issue of TidBITS is going out to exactly 40,000 people on our mailing list. Our list goes up significantly each day (between 50 and 100 people), although we also delete several hundred people each week due to mail problems. Still, we've been hovering around this 40,000 point for a few months and it's nice to achieve it finally. [ACE]
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-]).