Hi, from the documentation I could only find examples where the events are related more to Deferred, i.e., a method call that may take sometime. I'm a little confused about the difference between this and the "traditional" kind of event handling. Are they the same with just different terminology? By "traditional", I mean that in part of the code, I generate an event, say a "step 1 finished event", somewhere else there is a handler waiting for this event. The reactor is responsible for dispatching this event to that handler, which hopefull starts step 2. Or even more, like publish-subscribe: multiple handers can register for the same event. In other words, these events are generated internally, not necessarily by such delays like network, file access, or user input. Is this doable in Twisted? Thanks. Z.