%%% Save file as: TeX--XeT.DOC                   Source: FILESERV@SHSU.BITNET
%%% This is a file from Dante e.V.'s TeX--XeT (version 1.0) package of July 13,
%%% 1992.  Authoritative host is ftp.uni-stuttgart.de in /soft/tex/tex-sources
%%% checksum = "04586 38 297 1981"
TeX--XeT.DOC
TeX--XeT Copyright (C) 1992 by Dante e.V.

TeX--XeT contains the code necessary for mixed left-to-right and
right-to-left typesetting. This code is inspired by but different from
TeX-XeT as presented by Donald E. Knuth and Pierre MacKay in TUGboat 8,
14--25, 1987.

The TeX--XeT change file is distributed under the terms of the GNU
General Public License and must be combined with the system-dependent
TeX change file for a particular system. For that purpose the GNU
General Public License is to be interpreted such that the use of
TeX--XeT in a proprietary product or in a product with secret source
code is possible under certain conditions (for details see the TeX--XeT
change file).

In order to avoid confusion with TeX-XeT the present implementation of
mixed direction typesetting is called TeX--XeT. It differs from TeX-XeT
in several important aspects:
(1) Right-to-left text is reversed explicitely by the ship-out routine
    and is written to a normal DVI file without any begin-reflect or
    end-reflect commands;
(2) TeX--XeT produces exactly the same line breaks as TeX when applied
    to pure left-to-right text, in fact TeX--XeT passes the TRIP test
    with very few and well understood modifications;
(3) therefore TeX--XeT is designed to be used instead of and not in
    addition to TeX and consequently the pool file name is not changed;
(4) as an enhancement over TeX-XeT right-to-left text interrupted by a
    displayed equation is automatically resumed after that equation.

Files: TeX--XeT.CHANGE   WEB change file for TeX 3.141
                         Version 1.0 was released in June 1992

---  Peter Breitenlohner (peb@dm0mpi11.bitnet)  --------  03 Jul 92  ---