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+@node mixvm.el, mixvm, Getting started, Top
+@comment node-name, next, previous, up
+@chapter mixvm.el
+
+If you are an Emacs user and write your MIXAL programs using this
+editor, you will find the elisp program @file{mixvm.el} quite
+useful@footnote{@file{mixvm.el} has been kindly contributed by
+@value{PHILIP}. @file{mixvm.el} is based on a study of gdb, perldb, and
+pdb as found in @file{gud.el}, and @file{rubydb3x.el} distributed with
+the source code to the Ruby language.}. @file{mixvm.el} allows running
+the MIX virtual machine @code{mixvm} (@pxref{mixvm}) inside an Emacs
+@acronym{GUD} buffer, while visiting the MIXAL source file in another
+buffer.
+
+After installing @file{mixvm.el} (@pxref{Emacs support}), you can
+initiate an @sc{mdk}/@acronym{GUD} session inside Emacs with the command
+
+@example
+M-x mixvm
+@end example
+
+@noindent
+and you will have a @code{mixvm} prompt inside a newly created
+@acronym{GUD} buffer. @acronym{GUD} will reflect the current line in the
+corresponding source file buffer.