[Jack-Devel] jack_midi_event_write abs or rel time?

Hi, I'm writing a jack midi port for incudine, a common lisp based realtime audio system. Midi in is already working, but for midi out I couldn't find information about what kind of time should be supplied to jack_midi_event_write. Is it in absolute or relative frames? If it is relative to the current frame/block boundary: I tested the received time values (using jack_midi_event_get) with randomly generated midievents sent from pd over a2jmidi and got time values between 0 and 42 with a jackd setting of 1024 frames/period and 2 periods. I would expect values between 0 and 1023, or is there some misunderstanding on my side? Could this be due to a2jmidid? -- Orm