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NAME
     omega, iniomega, viromega - extended unicode TeX

SYNOPSIS
     omega [options] [commands]

DESCRIPTION
     This manual page is not meant to be  exhaustive.   The  com-
     plete  documentation for this version of TeX can be found in
     the info file or manual Web2C: A TeX implementation.

     Omega is a version of the TeX program modified  for  multil-
     ingual  typesetting.   It  uses  unicode, and has additional
     primitives for (among other things)  bidirectional  typeset-
     ting.

     The iniomega and viromega commands are Omega's analogues  to
     the  initex and virtex commands.  In this installation, they
     are symlinks to the omega executable.

     Omega's command line options are similar to those of TeX.

     Omega is experimental software.

OPTIONS
     This version of Omega 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 Omega was called or a %&
          line.

     --help
          Print help message and exit.

     --ini
          Be iniomega, for dumping formats;  this  is  implicitly
          true if the program is called as iniomega.

     --interaction mode
          Sets the interaction mode.  The  mode  can  be  one  of
          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.

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

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

     --maketex fmt
          Enable mktexfmt, where fmt must be one of tex or tfm.

     --no-maketex fmt
          Disable mktexfmt, where fmt must be one of tex or tfm.

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

     --progname name
          Pretend to be program name.  This affects both the for-
          mat used and the search paths.

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

     --version
          Print version information and exit.

ENVIRONMENT
     See the Kpathsearch library documentation (the `Path specif-
     ications'  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 Omega formats, you cannot  use  ~  in  a
     filename  you give directly to Omega, 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.

     TEXMFOUTPUT
          Normally, Omega 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  tex
          paper  and  the  current  directory is not writable, if
          TEXMFOUTPUT has  the  value  /tmp,  Omega  attempts  to
          create  /tmp/paper.log (and /tmp/paper.dvi, if any out-
          put is produced.)

     TEXINPUTS
          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.

     TEXEDIT
          Command template for switching to editor.  The default,
          usually vi, is set when Omega is compiled.

FILES
     The location of the files mentioned below varies from system
     to  system.   Use  the kpsewhich utility to find their loca-
     tions.

     omega.pool
          Encoded text of Omega's messages.

     *.fmt
          Predigested Omega format (.fmt) files.

BUGS
     This version of Omega 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.

     The DVI files produced by Omega  may  use  extensions  which
     make them incompatible with most software designed to handle
     DVI files.  In order to print or preview  them,  you  should
     use odvips to generate a PostScript file.

     Omega is experimental software.  If you use it, subscribe to
     the  omega  mailing  list  omega@ens.fr by sending a message
     containing subscribe omega Your Name to listserv@ens.fr.

SEE ALSO
     tex(1), mf(1), odvips(1), undump(1).

AUTHORS
     The primary authors of Omega  are  John  Plaice  and  Yannis
     Haralambous.

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