elisp: String Type

 
 2.3.8 String Type
 -----------------
 
 A “string” is an array of characters.  Strings are used for many
 purposes in Emacs, as can be expected in a text editor; for example, as
 the names of Lisp symbols, as messages for the user, and to represent
 text extracted from buffers.  Strings in Lisp are constants: evaluation
 of a string returns the same string.
 
    SeeStrings and Characters, for functions that operate on
 strings.
 

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