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803: Mainline

Next, to complete the model–view–controller illustration, you need to attach the model to a controller. You attach a controller in the same way that you attach a dependent part, using a model: message. As are dependent parts, the model is placed in a model instance variable. The controller does not become part of the list to which update: messages are sent, however:

Workspace
C := ControllerSubclass new. 
C model: M.