Looks like and old thread but I have a related question. I am making a set of my own objects that participate in the setclock/clock timing scheme. They will function in every way like their normal equivalents except that the "clock" message will be built in. To sync them all, I will send the clock name from the main patch via "send ChooseMasterClock" to a receive object within all of my new patchers. For the moment, I am using pipe, line, metro and makenote. These are all working. I am wondering if there is a list somewhere of all the standard externals that respond to the clock message.