Safari has a hidden Debug-menu that offers some options for debugging the browser. The debug menu is different from the Developer menu. You can perform load and stress tests en additional logging features.
Change default Mac OS X screencapture file type
Specify what file format you want to use for your screenshots (shift⇧ + cmd⌘ + 3) under Mac OS X. Th default format is .png, there are a lot of additional file formats available: png, pdf, tiff, pict, jpg, bmp, gif, psd, sgi and tga.
Change the default location for screenshots in Mac OS X
By default, screenshots (cmd⌘ + shift⇧ + 3) are saved on your desktop. It is possible to change this default location of screenshots, use the following command:
Hiding the files on your Mac OS X desktop
If you’re using your Mac in public, you might not want everybody to see the mess on your desktop! You can run the following command that will hide the icons from you desktop.
Disable Smooth Scrolling in Mountain Lion
In Mountain Lion 10.8 an animated smooth scrolling feature has been added to Mac OS X. Return to the pre-Smooth Scrolling functionality with this command:
Access the Debug menu in iCal
In iCal you’ll have a debug menu. In these menu are advanced options or options used for troubleshooting that don’t need to be presented to users in everyday use of the tools.
Access the Debug menu in Address Book
In Address Book you’ll have a debug menu. In these menu are advanced options or options used for troubleshooting that don’t need to be presented to users in everyday use of the tools.