A step followed by one more for each item, in order, each made from the state the one before left: the
andThen of many, e.g. an order that cancels each of its lines. It is dual, for pipe. Messages to children of
one name by id, one after the other, put the children back in the parent's state once, and not once per child,
with the same step as a result (decision 0155).
A step followed by one more for each item, in order, each made from the state the one before left: the
andThenof many, e.g. an order that cancels each of its lines. It is dual, forpipe. Messages to children of one name by id, one after the other, put the children back in the parent's state once, and not once per child, with the same step as a result (decision 0155).