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| ANSI Common Lisp 13 Characters 13.2 Dictionary of Characters
13.2.13 standard-char-p | Function
  Syntax: standard-char-p character generalized-boolean Arguments and Values: character - a character. generalized-boolean - a generalized boolean. Description: Returns true if character is of type standard-char; otherwise, returns false. Examples:
       (standard-char-p #\Space)  true
       (standard-char-p #\~)  true
       ;; This next example presupposes an implementation
       ;; in which #\Bell is a defined character.
       (standard-char-p #\Bell)  false
Exceptional Situations: Should signal an error of type type-error if character is not a character. Allegro CL Implementation Details: None.

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