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31 Most of the GNU Emacs text editor is written in the programming
32 language called Emacs Lisp. You can write new code in Emacs Lisp and
33 install it as an extension to the editor. However, Emacs Lisp is more
34 than a mere ``extension language''; it is a full computer programming
35 language in its own right. You can use it as you would any other
38 Because Emacs Lisp is designed for use in an editor, it has special
39 features for scanning and parsing text as well as features for handling
40 files, buffers, displays, subprocesses, and so on. Emacs Lisp is
41 closely integrated with the editing facilities; thus, editing commands
42 are functions that can also conveniently be called from Lisp programs,
43 and parameters for customization are ordinary Lisp variables.
45 This manual describes Emacs Lisp. Generally speaking, the earlier
46 chapters describe features of Emacs Lisp that have counterparts in
47 many programming languages, and later chapters describe features that
48 are peculiar to Emacs Lisp or relate specifically to editing.
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