To make the situation even more complicated, we now assume that instead of having a possible fixed length delay of 10 days, this number is subject to uncertainty. This can be done easily by creating another node which we name 窶廛elay窶. We then create a reference to this node by using the 窶廚reate reference窶ｦ窶 command in the model menu. In this case we just let the reference name be the same as the node name, i.e., 窶廛elay窶.
The point is that we need to choose a name for the reference which is unique among the references. Hence, if we had created another reference earlier with the name 窶廛elay窶 as well, then we would need to come up with something else this time.
