Finally, Acrobat provides keyboard shortcuts for displaying the JavaScript debugger, toggling the use of local fonts, and toggling Proof Colors and Overprint Preview.
Windows [Ctrl]-[J], Mac [ z ]-[J]
Display the JavaScript debugger
Should you need to debug (troubleshoot) scripts written in JavaScript, this keyboard shortcut can help you quickly reach the debugger.
Windows [Ctrl]-[Shift]-[Y], Mac [ z ]-[Shift]-[Y]
Toggle the use of local fonts
Windows [Ctrl]-[Y], Mac [ z ]-[Y]
Toggle Proof Colors on and off
Windows [Ctrl]-[Alt]-[Shift]-[Y], Mac [ z ]-[Option]-[Shift]-[Y]
Toggle Overprint Preview on and off
Use Overprint Preview to get an idea, on screen, of how overprints will turn out on paper.