Re: Defined Private Use was: SSP default ignorable characters

From: C J Fynn (
Date: Thu Apr 29 2004 - 07:39:15 EDT

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    "Philippe Verdy" <> wrote:

    > a font made for PUAs will also deliver at least a
    > definition URI record. The actual character properties tables need not be
    > present within the font itself.

    It is possible to embed a URI in a font - there are already places to embed
    designer, vendor and licence URL's in a font. However remember that in
    developing countries, where some lesser used scripts which might have only a
    PUA encoding may be used, connection to the internet may be a problem. It is
    just as easy to embed a table of character properties in a font as it is to
    embed a URL.

    TrueType, AAT, OpenType and Graphite fonts all have an extensible table
    structure so there are no technical difficulties to adding such a table. Of
    course the name for a table which embeds character properties (or a URL
    pointing to a properties table) must not conflict with existing table names.

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