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```aleph(1)                                                              aleph(1)

```

## NAME

```       aleph - extended Unicode TeX

```

## SYNOPSIS

```       aleph [options] [&format] [file|\commands]

```

## DESCRIPTION

```       Run  the  Aleph  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 Aleph commands can be given, the first of which
must start with a backslash.  With a &format argument Aleph uses a dif-
ferent set of precompiled commands, contained in format.fmt; it is usu-
ally better to use the -fmt format option instead.

Aleph is a version of the TeX program modified for  multilingual  type-
setting.   It  uses  Unicode,  and has additional primitives for (among
other things) bidirectional typesetting.

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

Aleph is no longer being actively developed;  see  LuaTeX  for  current
activity.

```

## OPTIONS

```       Run  aleph  --help  to  see  the  complete list of options; this is not
exhaustive.

-cnf-line string
Parse string as a texmf.cnf configuration line.  See the  Kpath-
sea manual.

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

--halt-on-error
Exit with an error code when an error is encountered during pro-
cessing.

--help Print help message and exit.

--ini  Be  `initial' Aleph for dumping formats; this is implicitly true
if the program is called as inialeph.

--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.

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.

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

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

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

--recorder
Enable the filename recorder.  This leaves a trace of the  files
opened  for  input  and  output  in  a file with extension .ofl.
(This option is always on.)

--shell-escape
Enable the \write18{command} construct.  The command can be  any
Bourne  shell command.  By default, this construct is enabled in
a restricted mode, for security reasons.

--version
Print version information and exit.

```

## ENVIRONMENT

```       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 Aleph formats, you cannot use ~ in a filename you
give directly to Aleph, 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, Aleph 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 TEXMFOUT-
PUT.  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, Aleph attempts to create
/tmp/paper.log (and /tmp/paper.dvi, if any output is  produced.)
TEXMFOUTPUT is also checked for input files, as TeX often gener-
ates files that need to be subsequently read; for input, no suf-
fixes (such as ``.tex'') are added by default, the input name is
simply checked as given.

TEXINPUTS
Search path for \input and \openin  files.   This  should  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/user/tex:"  to  prepend  the  current   directory   and
``/home/user/tex'' to the standard search path.

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

```

## NOTES

```       This manual page is not meant to be exhaustive.  The complete  documen-
tation for this version of Aleph can be found in the info manual Web2C:
A TeX implementation.  See http://tug/org/web2c.

```

## BUGS

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

This version of Aleph 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.

```

```       tex(1), mf(1)

```

## AUTHORS

```       The primary authors of Aleph are John Plaice and Yannis Haralambous.

Web2C 2020                       6 August 2019                        aleph(1)
```

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