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MVC Part II

• requesting a change in the model state and altering the display to reflect the change are fundamentally separate.
• e.g. click on a button to enage ``record''. the click initiates a request, but the button doesn't change its appearance until the model state changes.
• OK, and so ...
• there can be any number of controllers, and any number of views.
• defined, ordered relationship model, view(s) and controller(s)
• ensures that any changes initiated by any controller will result in updates to the (relevant) view(s).