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Presentation Semantics: Computer Science, Human-Computer Interaction, Formal Language
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| High Quality Content by WIKIPEDIA articles! In computer science,
particularly in human-computer interaction, presentation semantics
specify how a particular piece of a formal language is represented in a
distinguished manner accessible to human senses, usually human vision.
For example, saying that must render the
text between these constructs using some bold typeface is a
specification of presentation semantics for that syntax. An example of
interactive presentation semantics is defining the expect behavior of a
hypertext link on a suitable syntax. Many markup languages like HTML,
CSS, DSSSL, XSL-FO or troff have presentation semantics, but others like
XML, XLink and XPath do not. Character encoding standards like Unicode
also have presentation semantics. One of the main goals of style sheet
languages like CSS is to separate the syntax used to define structured
data from the syntax endowed with presentation semantics that is used to
render the data in various ways. |
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