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TTML writingMode vs CSS Writing Modes Level 3 writing-mode

From: Pierre-Anthony Lemieux <pal@sandflow.com>
Date: Fri, 4 Nov 2016 22:13:43 -0700
Message-ID: <CAF_7JxCZfX6kXDhwaLODeeqiuCZ5uY2gNUXvgCSby3tNM8=PWw@mail.gmail.com>
To: "public-tt@w3.org" <public-tt@w3.org>
Hi all,

TTML allows both 'lrtb' and 'rltb' as values for writingMode, and
references Section 7.29.7 at XSL.

CSS Writing Modes Level 3 [1] states that both 'lr-tb' and 'rl-tb' (as
defined in SVG) are both replaced by 'horizontal-tb'.

Why would 'lr-tb' and 'rl-tb' be redundant?

Thanks,

-- Pierre
Received on Saturday, 5 November 2016 05:14:37 UTC

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