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+
+     EncTeX -- the extension of TeX based on tex.ch --- INSTALLATION
+     ===============================================================
+     1. Sep. 1997                                    Petr Ol\v s\'ak
+     3. Jan. 2003
+
+For more information about encTeX -- read the README file.
+
+You can install the encTeX extension with no problems on web2c
+ver 7.3.
+
+We describe the installation, if the original TeX was complied already or
+if (at least) the ./configure script was run on web2c source tree and
+the TeX libraries are installed in /usr/local/share/texmf.
+
+1. Go to a directory with the tex.ch and tex.web files:
+
+   $ cd source/TeX/texk/web2c
+
+2. Unpack enctex.tar.gz:
+
+   $ zcat /somewhere/enctex.tar.gz | tar xvf -
+
+   The ./enctex directory is created with files of the package.
+
+3. Apply the patch to tex.ch file:
+
+   $ patch -p0 < ./enctex/enctex.patch-to-7.3.7
+
+   or
+
+   $ patch -p0 < ./enctex/enctex.patch-to-7.5
+   
+   If you are using the web2c 7.4.5 or web2c 7.5.x then apply the
+   enctex.patch-to-7.5. If you are using web2c 7.5.x then you 
+   can apply the second patch enc-option.patch-to-7.5. This second patch
+   implements the -enc commandline option (the encTeX is not 
+   initialized without this option) and solves the cooperation with
+   TCX tables. The enctex.patch-to-7.5 and enc-option.patch-to-7.5
+   patches were sent to Olaf Weber in order to include the encTeX to
+   the standard web2c TeX distribution.
+
+   The next patch from encTeX Feb. 2003 to Jun. 2004 is recommended:
+
+   $ patch -p0 < ./enctex/enctex.patch-jun2004
+
+   If an error occurs in Hunk #1 then you have to replace text
+   "Feb. 2003" to new text "Jun. 2004" in file tex.ch manually.
+
+
+4. Re-compile TeX:
+
+   $ make tex
+
+   The result is the new tex binary and tex.pool file.
+
+5. Install the tex binary and tex.pool into the system (your paths may
+be different from this example):
+
+   $ strip tex
+   $ su
+   # cp tex /usr/local/bin
+   # cp tex.pool /usr/local/share/texmf/web2c
+
+6. Install the input tables of encTeX
+
+   # mkdir /usr/local/share/texmf/tex/generic/enctex
+   # cp enctex/*.tex /usr/local/share/texmf/tex/enctex
+   # texhash
+
+7. Re-install the formats. The official version web2c-7.5.3 requires
+the -enc option when format is generated (not required when format is
+used). See the encdoc-e.tex|dvi|pdf for more information about 
+this option. 
+
+   # cd /usr/local/share/texmf/web2c
+   # tex -ini -enc plain
+   *\dump
+   # tex -ini -enc csplain.ini
+   # mv csplain.ini.fmt csplain.fmt
+   # tex -ini -enc cslatex.ini
+   # mv cslatex.ini.fmt cslatex.fmt
+
+If you want to try the new feature of the encTeX, you can inicialize some of
+format plain-*-*.tex (see the enctex directory). For example:
+
+   # tex -i plain-1250-cs
+
+8. The patched tex.ch is read by compilation process for tex, etex and
+pdftex. You can recompile all these programs and the encTeX extension
+will infect them succesfully. The enctex.patch-to-7.3 includes a
+little patch to pdftexdir/tex.pch file in order to succesfull
+compilation of pdftex. So, it is sufficient to do:
+
+   $ make pdftex
+   $ strip pdftex
+   $ su
+   # cp pdftex /usr/local/bin
+   # cp pdftex.pool /usr/local/share/texmf/web2c
+   # cd /usr/local/share/texmf/web2c
+   # pdftex -ini -enc -jobname pdfplain plain
+   *\dump
+   # pdftex -ini -enc -jobname pdfcsplain csplain.ini
+   # pdftex -ini -enc -jobname pdfcslatex cslatex.ini
+
+9. The omega program is never infected by encTeX because it does not
+read the tex.ch file during compilation. Omega has its own input
+preprocessor.
+
+--------------
+
+The encTeX is installable on others than web2c implementation of TeX too.
+All changes are made in tex.ch file. You can see to enctex.ch file (with
+all changes of encTeX sumarized) and do the changes into your tex.ch
+manually. There is only one problem here: I used the functions
+dump_things/undump_things for dumping/undumping the xord, xchr and xprn
+vectors to/from fmt file. These functions are the part of web2c libraries
+only. If these functions are not available on your implementation, you must
+rewrite the dumping using macros similar to dump_four_ASCII from
+tex.web.
+