caption: Signal, Sign, Symbol distinctions The concepts refer to the way in which an observer interprets information, --not just to the form in which information is presented --The very same display may be interpreted as a signals as a sign or as a symbol Signals and signs have a perceptual basis, whereas symbols have a semantic basis --Both signals and signs refer to perceptual properties of the environment such as distance, color and size --Symbols although they may take a particular form, refer to the meaning of the information, not its form
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