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       etex, einitex, evirtex - extended TeX


       etex [options] [& format ] [ file | \ commands ]


       Run  the e-TeX typesetter on file, usually creating file.dvi.  If the file argument has no
       extension, ".tex" will be appended to it.  Instead of a filename, a set of e-TeX  commands
       can  be given, the first of which must start with a backslash.  With a &format argument e-
       TeX uses a different set of precompiled commands, contained in format.fmt; it  is  usually
       better to use the -fmt format option instead.

       e-TeX is the first concrete result of an international research & development project, the
       NTS Project, which was established under the aegis of DANTE e.V. during 1992. The aims  of
       the  project  are  to  perpetuate  and  develop  the  spirit and philosophy of TeX, whilst
       respecting Knuth's wish that TeX should remain frozen.

       e-TeX can be used in two different modes: in compatibility  mode  it  is  supposed  to  be
       completely  interchangable with standard TeX.  In extended mode several new primitives are
       added that facilitate (among other things) bidirectional typesetting.

       An extended mode format is generated by prefixing the name of  the  source  file  for  the
       format  with  an asterisk (*).  Such formats are often prefixed with an `e', hence etex as
       the extended version of tex and elatex as the extended version of latex.  However,  eplain
       is an exception to this rule.

       The  einitex and evirtex commands are e-TeX's analogues to the initex and virtex commands.
       In this installation, they are symbolic links to  the  etex  executable.   These  symbolic
       links may not exist at all.

       e-TeX's  handling  of  its  command-line  arguments  is  similar  to that of the other TeX
       programs in the web2c implementation.


       This version of e-TeX understands the following command line options.

       -fmt format
              Use format as the name of the format to be used, instead of the name by which e-TeX
              was called or a %& line.

       -enc   Enable  the  encTeX  extensions.  This option is only effective in combination with
              -ini.      For     documentation     of     the     encTeX      extensions      see

       -etex  Enable  the  e-TeX  extensions.   This option is only effective in combination with

              Print error messages in the form file:line:error which is similar to the  way  many
              compilers format them.

              Disable printing error messages in the file:line:error style.

              This is the old name of the -file-line-error option.

              Exit with an error code when an error is encountered during processing.

       -help  Print help message and exit.

       -ini   Start  in  INI  mode,  which is used to dump formats.  The INI mode can be used for
              typesetting, but no format is preloaded, and  basic  initializations  like  setting
              catcodes may be required.

       -interaction mode
              Sets  the  interaction  mode.   The  mode  can  be  either  batchmode, nonstopmode,
              scrollmode, and errorstopmode.  The meaning of these modes is the same as  that  of
              the corresponding \commands.

       -ipc   Send  DVI output to a socket as well as the usual output file.  Whether this option
              is available is the choice of the installer.

              As -ipc, and starts the server at the other end as well.  Whether  this  option  is
              available is the choice of the installer.

       -jobname name
              Use name for the job name, instead of deriving it from the name of the input file.

       -kpathsea-debug bitmask
              Sets  path  searching  debugging  flags according to the bitmask.  See the Kpathsea
              manual for details.

       -mktex fmt
              Enable mktexfmt, where fmt must be either tex or tfm.

       -mltex Enable MLTeX extensions.  Only effective in combination with -ini.

       -no-mktex fmt
              Disable mktexfmt, where fmt must be either tex or tfm.

       -output-comment string
              Use string for the DVI file comment instead of the date.

       -output-directory directory
              directory instead of the current directory.   Look  up  input  files  in  directory
              first, the along the normal search path.

              If the first line of the main input file begins with %& parse it to look for a dump
              name or a -translate-file option.

              Disable parsing of the first line of the main input file.

       -progname name
              Pretend to be program name.  This affects both  the  format  used  and  the  search

              Enable  the  filename  recorder.  This leaves a trace of the files opened for input
              and output in a file with extension .fls.

              Enable the \write18{command} construct.  The command  can  be  any  shell  command.
              This construct is normally disallowed for security reasons.

              Disable  the  \write18{command}  construct,  even if it is enabled in the texmf.cnf

              Insert source specials into the DVI file.

       -src-specials where
              Insert source specials in certain placed of  the  DVI  file.   where  is  a  comma-
              separated value list: cr, display, hbox, math, par, parent, or vbox.

       -translate-file tcxname
              Use  the  tcxname  translation table to set the mapping of input characters and re-
              mapping of output characters.

       -default-translate-file tcxname
              Like -translate-file except that a %& line can overrule this setting.

              Print version information and exit.


       See the Kpathsearch library documentation (the `Path  specifications'  node)  for  precise
       details  of  how the environment variables are used.  The kpsewhich utility can be used to
       query the values of the variables.

       One caveat: In most e-TeX formats, you cannot use ~ in a filename you give directly to  e-
       TeX,  because  ~  is  an active character, and hence is expanded, not taken as part of the
       filename.  Other programs, such as Metafont, do not have this problem.

              Normally, e-TeX puts its output files in the current directory.  If any output file
              cannot  be  opened  there,  it  tries  to open it in the directory specified in the
              environment variable TEXMFOUTPUT.  There is no default  value  for  that  variable.
              For  example,  if  you say etex paper and the current directory is not writable, if
              TEXMFOUTPUT has the value  /tmp,  e-TeX  attempts  to  create  /tmp/paper.log  (and
              /tmp/paper.dvi, if any output is produced.)

              Search  path  for \input and \openin files.  This should probably start with ``.'',
              so that user files are found before system files.  An empty path component will  be
              replaced  with the paths defined in the texmf.cnf file.  For example, set TEXINPUTS
              to ".:/home/usr/tex:" to prepend the current direcory and ``/home/user/tex'' to the
              standard search path.

              Search path for format files.

              search path for etex internal strings.

              Command  template for switching to editor.  The default, usually vi, is set when e-
              TeX is compiled.

              Search path for font metric (.tfm) files.


       The location of the files mentioned below varies from system to system.  Use the kpsewhich
       utility to find their locations.

              Text file containing e-TeX's internal strings.
              Filename mapping definitions.

       *.tfm  Metric files for e-TeX's fonts.

       *.fmt  Predigested e-TeX format (.fmt) files.


       Starting  with  version  1.40,  pdfTeX  incorporates  the  e-TeX  extensions,  so  in this
       installation eTeX is just a symbolic link to pdfTeX.  See pdftex(1).  This manual page  is
       not  meant  to be exhaustive.  The complete documentation for this version of e-TeX can be
       found in the info manual Web2C: A TeX implementation.


       This version of e-TeX implements a number of optional extensions.  In fact, many of  these
       extensions conflict to a greater or lesser extent with the definition of e-TeX.  When such
       extensions are enabled, the banner printed when e-TeX starts is changed  to  print  e-TeXk
       instead of e-TeX.

       This  version  of  e-TeX  fails  to  trap arithmetic overflow when dimensions are added or
       subtracted.  Cases where this occurs are rare, but when it does  the  generated  DVI  file
       will be invalid.


       pdftex(1), tex(1), mf(1).


       e-TeX was developed by Peter Breitenlohner (and the NTS team).

       TeX  was  designed  by  Donald  E.  Knuth, who implemented it using his  system for Pascal
       programs.  It was ported to Unix at Stanford by Howard Trickey, and at  Cornell  by  Pavel
       Curtis.   The  version now offered with the Unix TeX distribution is that generated by the
       to C system (web2c), originally written by Tomas Rokicki and Tim Morgan.

       The encTeX extensions were written by Petr Olsak.