Automation lovers will be happy to hear that Stairways Software has updated its popular macro utility Keyboard Maestro. In version 4.0.2, macros can be imported via double-clicking or drag-and-drop, Command-Shift-Tab can be used as a hot key, the Hot Key view has been tweaked, Typed String triggers can be single characters, and the Hot Key menu includes an Other option to indicate that any key may be used. The update also fixes a handful of bugs, including a crashing bug related to the Hot Key pop-up menu and another caused by recording in 64-bit mode in Mac OS X 10.5, along with an issue with Dvorak keyboards. ($36 new, free update, 7.7 MB)
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-]).