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What Does a Stylesheet Do?
A stylesheet specifies the presentation of XML information using two basic categories of techniques:
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An optional transformation of the input document into another structure
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generation of constant text
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suppression of content
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moving text (e.g., exchanging the order of the first and last name)
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duplicating text (e.g., copying titles to make a table of contents)
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sorting
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more complex transformations that "compute" new information in terms of the existing information
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A description of how to present the transformed information (i.e., a specification of what properties to associate to each of the various parts of the transformed information)