I've been wanting to find a way to quickly show and hide multiple calendars in iCal. I was beginning to look into AppleScript options, when I decided to try a typical Mac trick and discovered this. As far as I can tell, it's not in the hints database...
- First, the obvious ... each calendar can be individually shown or hidden by clicking on the check box next to its name
- Command-clicking on any visible calendar's check box hides all calendars.
- Command-clicking on any hidden calendar's check box shows all other hidden calendars.
- Command-Option-clicking on a calendar's check box (shown or hidden) hides all other calendars, leaving only the selected calendar visible.