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1.3.4 Evaluation examples

The symbol ‘’ used in program examples is read “evaluates to.” For example,

(* 5 8) ⇒ 40

means that the expression (* 5 8) evaluates to the object 40. Or, more precisely: the expression given by the sequence of characters “(* 5 8)” evaluates, in an environment containing the base library, to an object that can be represented externally by the sequence of characters “40.” See External representations for a discussion of external representations of objects.