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
<bold> ... </bold>
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 expected behavior of a
hypertext link on a suitable syntax.