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diff --git a/doc/emacs/glossary.texi b/doc/emacs/glossary.texi
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@@ -953,9 +953,15 @@ another. The usual way to move text is by killing (q.v.@:) it and then
yanking (q.v.@:) it. @xref{Killing}.
@item MULE
-MULE refers to the Emacs features for editing multilingual
-non-@acronym{ASCII} text using multibyte characters (q.v.).
-@xref{International}.
+@cindex MULE
+Prior to Emacs 23, @acronym{MULE} was the name of a software package
+which provided a @dfn{MULtilingual Enhancement} to Emacs, by adding
+support for multiple character sets (q.v.). @acronym{MULE} was later
+integrated into Emacs, and much of it was replaced when Emacs gained
+internal Unicode support in version 23.
+
+Some parts of Emacs that deal with character set support still use the
+@acronym{MULE} name. @xref{International}.
@item Multibyte Character
A multibyte character is a character that takes up several bytes in a