How to clear a focus target?

Hi, I'm new to FFIV but not to MMOs.....playing a whm so far (although it seems my server is crowded with conjurers =( ), but want to be able to monitor boss cast bars during fight. I found the way to put focus in a macro, but don't know how to clear the focus. Any help would be greatly appreciated, thanks =)

Shift+F (by default) both sets and clears your focus target. My guess would be that /focustarget on your current focus would do the same thing. And/or perhaps /focustarget with nothing targeted.

Thanks, not sure how I missed that =)