\begin{thebibliography}{10}

\bibitem{xerox:star}
{\it 8010 STAR Information System Reference Library, Release 4.2}.
\newblock Xerox Office Systems, El Segundo, California, 1984.

\bibitem{aw:guide}
{\it Addison-Wesley Guide for Authors}.
\newblock Addison-Wesley Publishing Company, Reading, Massachusetts, 1982.

\bibitem{frame:1.0}
{\it Frame Maker Reference Manual, Version 1.0}.
\newblock Frame Technology Corporation, San Jose, California,
  February 1987.

\bibitem{ms:word}
{\it Reference to Microsoft Word, Word Processing Program for the Apple
Macintosh, Version 3.0.}
\newblock Microsoft Corporation, Seattle, Washington, January 1987.

\bibitem{reid:man}
{\it Scribe Document Production System User Manual}.
\newblock Unilogic Ltd., Pittsburgh, Pennsylvania, April 1984.

\bibitem{seybold}
{\it The Seybold Report on Publishing Systems}.
\newblock Seybold Publications Inc., Media, Pennsylvania.
\newblock Published 22 times a year.

\bibitem{aho:awk}
Alfred~V. Aho, Brian~W. Kernighan, and Peter~J. Weinberger.
\newblock {\it AWK: A Pattern Scanning and Processing Language (User's
  Manual)}.
\newblock Computer Science Technical Report~No. 118, AT\&T Bell Laboratories,
  Murray Hill, New Jersey, June 1985.

\bibitem{beach:index}
Richard~J. Beach.
\newblock Personal communication.

\bibitem{bentley:index}
Jon~J. Bentley and Brian~W. Kernighan.
\newblock {\it Tools for Printing Indexes}.
\newblock Computer Science Technical Report~No. 128, AT\&T Bell Laboratories,
  Murray Hill, New Jersey, October 1986.

\bibitem{brandin:war}
David~H. Brandin and Michael~A. Harrison.
\newblock {\it The Technology War}.
\newblock John Wiley and Sons, Inc., New York, New York, 1987.

\bibitem{phc:tm}
Pehong Chen and Michael A. Harrison
\newblock {\it Integrating Noninteractive Document Processors into an
		Interactive Environment}.
\newblock Technical Report~87/349, Computer Science Division, University of
  California, Berkeley, California, April 1987.  Submitted for publication.

\bibitem{hutchins:dm}
Edwin~L. Hutchins, James~D. Hollan, and Donald~A. Norman.
\newblock Direct manipulation interfaces.
\newblock In D.~A. Norman and S.~W. Draper, editors, {\it User-Centered System
  Design}, pages~87--124 (Chapter 5), Lawrence Erlbaum Associates, Inc.,
  Hillsdale, New Jersey, 1986.

\bibitem{knuth:lp}
Donald~E. Knuth.
\newblock Literate programming.
\newblock {\it The Computer Journal}, 27(2):97--111, May 1984.

\bibitem{knuth:tex}
Donald~E. Knuth.
\newblock {\it The {\TeX} Book}.
\newblock Addison-Wesley Publishing Company, Reading, Massachusetts, 1984.
\newblock Reprinted as Vol. A of {\it Computers \& Typesetting\/}, 1986.

\bibitem{knuth:pgm}
Donald~E. Knuth.
\newblock {\it {\TeX}: The Program}.
\newblock Volume~B of {\it Computers \& Typesetting}, Addison-Wesley Publishing
  Company, Reading, Massachusetts, 1986.

\bibitem{lamport:latex}
Leslie Lamport.
\newblock {\it {\Lit}: A Document Preparation System. User's Guide and
  Reference Manual}.
\newblock Addison-Wesley Publishing Company, Reading, Massachusetts, 1986.

\bibitem{mcmahon:sed}
Lee~E. McMahon.
\newblock {\it SED -- A Non-interactive Text Editor}.
\newblock Computer Science Technical Report, AT\&T Bell Laboratories, Murray
  Hill, August 1978.
\newblock Also available in UNIX User's Manual.

\bibitem{ossanna:nroff}
Joseph~F. Ossanna.
\newblock {\it Nroff/Troff User's Manual}.
\newblock Computer Science Technical Report~No. 54, AT\&T Bell Laboratories,
  Murray Hill, New Jersey, October 1976.
\newblock Also available in UNIX User's Manual.

\bibitem{shneiderman:dm}
Ben Shneiderman.
\newblock Direct manipulation: a step beyond programming languages.
\newblock {\it IEEE Computer}, 16(8):57--69, August 1983.

\bibitem{stallman:gnu}
Richard~M. Stallman.
\newblock {\it {GNU} Emacs Manual, Fifth Edition, Version 18}.
\newblock Free Software Foundation, Cambridge, Massachusetts, December 1986.

\bibitem{teitelman:cedar}
Warren Teitelman.
\newblock A tour through {Cedar}.
\newblock {\it IEEE Software}, 1(2):44--73, April 1984.

\bibitem{yank:eb}
Nicole Yankelovich, Morman Meyrowitz, and Andries van~Dam.
\newblock Reading and writing the electronic book.
\newblock {\it IEEE Computer}, 18(10):15--30, October 1985.

\end{thebibliography}