Q. Why is it important for system services to be suitably general?

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Q. How does task conformance relate to the success of direct manipulation interfaces?

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Q. What is the purpose of standards for interactive system design?

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Q. How do the underlying theories differ between hardware and software design standards?

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Q. Why have hardware standards historically been in place before software standards?

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Q. Which of the following is an example of an international standard for software ergonomics in user interfaces?

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Q. According to ISO standard 9241, what does "usability" refer to?

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Q. What is the importance of the definition of usability in the ISO standard 9241?

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Q. What gives strength to a standard, making large communities abide by it?

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Q. Why has there been a greater effort in developing standards for promoting usability?

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Q. Why are most design rules for interactive systems more suggestive and general?

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Q. How does the level of specificity in guidelines affect their applicability in design stages?

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Q. What are the basic categories in the Smith and Mosier guidelines for interactive system design?

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Q. How does Mayhew's catalog of general guidelines differ from Smith and Mosier's?

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Q. What is the concern for dialog styles in the context of general guidelines?

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Q. Why might an application need to mix dialog styles?

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Q. How are abstract guidelines in Apple's Human Interface Guidelines distinguished from concrete guidelines?

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Q. According to the Apple guidelines, what is the 'noun-verb' ordering guideline in the context of user interface design?

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Q. What is the trade-off involved in the guideline of user control?

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Q. What is the purpose of style guides in graphical user interface (GUI) programming environments?

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