Recommended for iMac models released in late September 2013 (see “Apple Updates iMac with Faster CPUs and 802.11ac Wi-Fi,” 24 September 2013), Apple has issued iMac 10.8.5 Supplemental Update 1.0 for those models with an Nvidia GeForce GT 750M graphics processor running OS X 10.8.5 Mountain Lion. The update fixes two bugs: one that caused external drives to eject after the iMac goes to sleep and another that prevented certain USB Bluetooth adapters from working. (Free update, 17.1 MB)
Keep Markup Tools Active in PDFpen
By default, PDFpen switches back to the Edit tool each time you add text, scribbles or other markup. To keep a tool selected (continuous use mode), double-click it. To exit continuous use mode, click the Select tool or press Command-1. You can also make continuous use mode the default by selecting Keep Tools Selected After Use in PDFpen's Editing preferences.