Re: controll sequences

From: Antoine Leca (
Date: Wed Jun 08 2005 - 09:00:02 CDT

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    On Tuesday, June 7th, 2005 17:31Z Matthias-Christian Ott wrote:

    > For what are the controll sequences in ascii (except \n & \t) useful?

    The writers of the standard ECMA-48 (ISO/IEC 6429, and the related ANSI
    X3.64) have written about 70 pages trying to provide answers to this very
    question. You can read their prose one click away from

    Perhaps part of the propositions could be seen as useless these days (and in
    fact a pair of them probably have always being useless.) However, I think
    that a superficious reading of this standard should show you that there are
    a variety of intended uses for control characters, depending of the

    There is also the accompanying ECMA-35 (ISO/IEC 2022), at, which
    provide some additional answers (particularly for SI, SO and the related
    ones). More relevant could be ISO 1745:1975,
    change /fr/ to /en/ if you need), but I must confess I never have the
    oportunity to actually read it.


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