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Explain cast metaphor and slide show metaphor.

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Cast Metaphor:

 1.Time is shown horizontally; like a spreadsheet: rows, or tracks, represent instantiations of characters in a multimedia production.

 2.Multimedia elements are drawn from a cast of characters, and scripts are basically event-procedures or procedures that are triggered by timer events

 3.Director, by Macromedia, is the chief example of this metaphor.

 4.Director uses the Lingo scripting language, an object-oriented event-driven language.

 5.The Cast paradigm uses a music score as its primary authoring metaphor.

 6.The synchronous elements are shown in various horizontal tracks with simultaneity shown via the vertical columns.

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