Analogue-sequencer

I don't know if this has been brought up in the past as i have only had my P3 for a few 
weeks now, but has there been any suggestion for muting auxes. Sometimes i have all 
sixteen steps or even just a pattern in the aux that i want to mute out the auxes on the fly.  
This would be great for pattern that use the auxes for additional notes. 

Colin would it be possible to have a mute aux function, possible on the same page as the 
shift functions. This mute aux could use the F3 key along with one of the numbered keys, 
(1 to 4 obviously). I don't know if this is possible or not but it's the only way i can think of 
introducing it that wouldn't cause to much confusion. 

Does anybody else desire a mute aux button?

Tommy