St. Clair Software has released Default Folder X 4.6.5 with a new Duplicate command, which enables you to copy a file or folder within an Open dialog. The Open and Save dialog enhancement utility also fixes a bug that would freeze OmniOutliner 4 when saving or exporting a file, as well as a problem on OS X 10.9 Mavericks with Default Folder X’s Preview and Spotlight windows. Additionally, the update adds the Command-Shift-C keyboard shortcut to go to My Computer in file dialogs, ensures that Open dialogs in NetNewsWire begin in the correct folder, accesses the Desktop using Command-Shift-D, and correctly displays the first two items in the Favorites menu when accessed from the menu bar. ($34.95 new, $10 off for TidBITS members, free update, 11.1 MB, release notes, 10.6+)
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-]).