[PD] 'synced' number and slider

[Lorenzo]

First of all, thanks for all the input, didn't think such a trivial 
question would arise such a fruitful discussion :)

> the send/receive "magic" in the iemguis are explicitely designed to 
> allow the same send/receive names in order to sync several different 
> objects.
> of course you can do this explicitely. iemguis just help to make this 
> simpler.
Nice. It was a point about the iem gui objects I was missing/overlooking.

Bests,
Lorenzo.