NAME
    tela - TEnsor LAnguage

SYNOPSIS
    tela [ -v | --verbose ] [ -b | --batch ] [ -f | --fast ] [ -s |
    --silent ] [ -O[*level*] ] [ -e *tela-code* | --execute *tela-
    code* ] [ *files* ]

    tela -V | --version

    tela -? | -h | --help

DESCRIPTION
    Start tela; first execute *tela-code*, then each of *files* in
    turn (if any), finally enter interactive mode.

    Tela is a numerical computing environment mainly targeted for
    numerical simulation pre- and post-processing work. The language
    supports arbitrary rank arrays (hence the name, TEnsor
    LAnguage), and has powerful programming capabilities including
    F90 style vector notation. Two- and three- dimensional graphics
    is implemented by calling PlotMTV. For 2D graphics, the SPPC
    interface is also available.

    The on-line help is intended as the primary source of
    documentation. The command help *topic* gives help on *topic*,
    where *topic* can be individual reserved words, function names,
    etc.

OPTIONS
    tela accepts the following options:

    -b, --batch
            Quit after executing *tela-code*, or *files*.

    -e, --execute *tela-code*
            Execute Tela expressions *tela-code*.

    -f, --fast
            Do not source any initialization files; see the section
            on "INITIALIZATION".

    -O[*level*]
            Select optimization level. -O0, the default, means no
            optimization. -O, and -O1 enable flat-code optimization.

    -h, -?, --help
            Print help message and exit.

    -s, --silent
            Suppress startup message, MIPS count, and FLOPS count.

    -v, --verbose
            Set verbose execution mode: list tree-codes and flat-
            codes.

    -V, --version
            Print version number and exit.

INITIALIZATION
    Unless suppressed with the -f or --fast options tela tries to
    source the file telainit.t (or just telainit if that exists).
    The sourced files are searched in a directory path, which is
    obtained as follows:

    1.  A compiled-in default, typically
        `"/usr/local/lib/tela/t:/usr/local/lib/tela/ct:/usr/local/li
        b/tela:."'

    2.  If set, the environment variable TELAPATH_SYSTEM overrides the
        compiled-in default, or appends to it if it starts with a
        colon.

    3.  Similarly, if set, the environment variable TELAPATH overrides
        the previous, or appends to them if it starts with a colon.

    The combined effect of the compiled-in default, TELAPATH_SYSTEM,
    and TELAPATH can be seen by giving the command telapath() in
    Tela.

    The standard telainit.t tries to source $HOME/.telainit.t.

ENVIRONMENT
    Besides TELAPATH and TELAPATH_SYSTEM, tela recognizes the
    following environment variables: TELA_PLOTMTV specifies the
    PlotMTV program to use (default: `plotmtv'). The function
    `whos()' displays variables and uses the PAGER (default: `more')
    and TELA_SORTER (default: `sort' `-b' `-f' `-k' `1') environment
    variables.

SEE ALSO
        telakka     Tela extension utility
        ctpp        Tela preprocessor
        plotmtv     Standard associated graphics package
        sppc        Alternative graphics package
        m2t         Matlab to Tela translator

HISTORY
    Tela by Pekka Janhunen; man page by Ch. L. Spiel, 2000-12-7.