Well, I am under the impression until somebody tells me how to use this event that it does not work likely due to not being implemented or more likely due to my not being able to figure out what is going on.
In my test, I have created a chain of events. Images 1 and 2 show the chain and what I have selected for the Flow Control. What is wrong with this? I have looked at the example in Milos' Towers of Magic. I don't want a l oop, so I left the looping bit out.
Also, not in this example, but I can't imagine what I would use "Call Marker", "Return" or "Pop Return Stack" to do.