model-view controller MVC MVC MVC Model-View–Controller model-view-controller (MVC) MVC model-view-controller MVC MVC MVC MVC MVC model-view-controller model-view-controller (MVC) MVC system MVC MVC MVC model-view-controller MVC MVC Model-View-Controller model-view-controller model-view-controller MVC Model-View-Controller MVC MVC MVC model-view-controller MVC Model View Controller