A reference, or a references point, is the intensional use of one thing, a point of reference or reference state, to indicate something else. When reference is intended, what the reference points to is called the referent.
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General Examples
Some general examples are:
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References may be indicated by sounds (like name), pictures (like roadsigns), text (like bibliographies), indexes (like numbers) and objects (like rings); but a range of other concrete or abstract methods can be used. This included methods that deliberately hide the reference from some observers, as in cryptography.
The following sections give specific usages of reference in different subjects.
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The Associated Press
But when Ogilvy went to finally hit the putt, a fan yelled out a reference from the movie "Caddyshack" and he ended up missing it. ...
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