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Controller Applications

In Chapter 7, “STEP 7: Streaming Video with NetStream(),” you were introduced to a model of publication and subscription in the context of streaming video. The controller application operates similar to the streaming subscription model. Controller and subscriber applications use two different interfaces to interact with an application. One interface controls what the other interface can see and do.

To illustrate this model, imagine you were sitting in on a presentation at a conference. The presentation has a speaker on a stage with a PowerPoint (or Flash) presentation on a laptop. You take your seat in the back of the room and enter into a one-way relationship with the presenter and his laptop. During a presentation, the speaker is positioned on a stage in front of an audience of attendees. The speaker controls what the audience can see on a screen and manages when questions can be asked or answered.


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