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.