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\date {December 15}
\stanford  
\to {Barbara Beeton\cr
American Mathematical Society\cr
P.O.Box 628\cr
Providence, RI 02940\cr}
{\noindent Dear Barbara:}

Under separate cover, we are sending you: 1) The December 1981 preliminary
draft of ``The WEB System of Structured Documentation'' by Donald E.
Knuth, and 2) A 9-bit non-labeled magnetic tape written in ascii at 1600
bpi, lrcl 133, blksize 7980, recfm FBA, containing the following files:
TANGLE.PAS, TANGLE.WEB, WEAVE.WEB, WEBHDR.TEX, and BASIC.TEX.

The hard-copy report was written in WEB and prepared for printing through
the use of the WEAVE program and of TEX.  Appendices to this report
contain the complete WEAVE-produced listings of TANGLE and of WEAVE
itself. Appendix G, on page 176, outlines the procedure that may be
necessary to install the WEB system on your computer.

An attempt has been made to make TANGLE and WEAVE reasonably system
independent but some system dependencies still remain.  The modules that
may require attention are listed in the indices on page 103 and page 170
in the documentation under ``system dependencies''.

The TANGLE.PAS file is in upper case, broken into lines not exceeding 72
characters per line at PASCAL-acceptable places.  The only concession to
readability is that the breaks are made after semicolons when this is
possible.

WEBHDR.TEX is the WEB header file that contains specific formatting
information needed by TEX to process the output from WEAVE. The last file
is the usual BASIC.TEX.

We would appreciate receiving a check for \$25, if you have not already
sent us one, to help defray the expenses of making and sending the tape.
We would also appreciate having the tape returned to us as soon as you
have transcribed it, and, above all, we would like your comments and
suggestions.

\sign {\hfill Sincerely yours,\cr\ssqip\cr
\hfill Arthur L. Samuel}

c/c DEK

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\end