If you are in the process of putting together a CD-ROM for a user group or other non-profit, non-commercial organization and wish to include back issues of TidBITS, please contact me so we can talk about what file format to use. Thanks! -Adam
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-]).