Re: Defined Private Use was: SSP default ignorable characters

From: John Hudson (
Date: Wed Apr 28 2004 - 20:29:17 EDT

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    John Jenkins wrote:

    > FWIW, AAT includes an optional 'prop' table which allows people to
    > associate a number of Unicode properties -- most notably directionality
    > -- with specific glyphs in a font. It *is* a little weird to do this,
    > as John says, but it's there.

    I debated whether to mention the 'prop' table in my message, but decided it serves best as
    an example of the 'awkward fit' to which I referred. The Apple TT reference manual
    identifies the 'prop' table as the 'glyph properties table' -- somewhat analogous to the
    OpenType 'gdef' table. The mix of specifically glyph and quasi-character properties in the
    'prop' table is quite confusing. More to the point, is this table actually used by any

    John Hudson

    Tiro Typeworks
    Vancouver, BC
    I often play against man, God says, but it is he who wants
       to lose, the idiot, and it is I who want him to win.
    And I succeed sometimes
    In making him win.
                  - Charles Peguy

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