x11 id of canvas x11 id of window containing canvas canvas level request info. this is essentially a {[netsend]} roundtrip {\,} therefore it acts like a {[delay]} of unknown variable logicaltime. be patient :) tk id of canvas. note: even though this one is known in advance and could be output immediately {\,} the whole outlet set is still behaving as a {[unpack} s s s\] {\,} therefore it waits until the reply is received from the pd client.