what I've understood so far.
there's some object that just stores values and need a bang later to output those values.
there's some others that "hot inlet" triggers values.
[rslider] for example, when sending to it a list to its "hot inlet", it just store the list and show it, but will not output until it gets bang.
[pack], for example, it output immediately whatever values it gets in its "hot inlet".
so, (if above is true) my question is
how can I know which object behave which way?
looking up everytime ref. is really time consuming, pain in the ass....