Q. What is the role of the "abstraction component" in the PAC model?

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Q. How does the PAC model differ from the MVC model in terms of input and output?

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Q. What is the primary purpose of menu networks in interactive systems?

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Q. How does the use of callback procedures differ between the X toolkit and the MVC architecture?

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Q. What is the primary advantage of using menu networks as an implementation technique for dialog control?

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Q. What is the main advantage of using a multi-agent architecture, such as the PAC model, for interactive systems?

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Q. In the context of interactive systems, what does the term "PAC" stand for in the PAC model?

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Q. Which programming paradigm involves an internal control loop within the application program to handle events and interactions?

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Q. What is a key benefit of using toolkits in interactive system development?

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Q. In the context of UIMS, what is the role of the dialog control component?

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Q. What is a limitation of using formal context-free grammar notations, such as BNF, to describe interactive system dialogs?

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Q. State transition diagrams are used for expressing dialogs graphically. What challenge do they face in linking events with their corresponding presentation or application actions?

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Q. What advantage do event languages have over formal grammar notations for describing interactive system dialogs?

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Q. What is a characteristic of production rules in the context of event languages?

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Q. Which approach is taken by declarative languages in describing the relationship between application and presentation in interactive systems?

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Q. How do constraint systems contribute to describing the relationship between application and presentation?

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Q. What is the primary advantage of using graphical specification techniques for dialog specification in interactive systems?

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Q. How does the ALV (Abstraction-Link-View) model suggest implementing the communication between abstraction and view components?

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Q. Which combination of techniques is employed by the Myers Garnet system in the context of user interface management systems?

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Q. In the context of specifying dialog control, what does external control mean?

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