r12a has just created a new issue for https://github.com/w3c/i18n-activity: == Default directions in mixed textOrientation should use TR50 == 10.2.46 tts:textOrientation http://w3c.github.io/ttml2/spec/ttml2.html#style-attribute-textOrientation > If the value of this attribute is mixed, then, in vertical writing modes, glyphs from horizontal scripts are set sideways, i.e., 90° clockwise from their nominal orientation in horizontal text, while glyphs from vertical scripts are not affected. The terms 'vertical scripts' and 'horizontal scripts' don't appear to have any definition. I think this paragraph should actually say that the defaults specified in http://www.unicode.org/reports/tr50/ should be applied for mixed text. Please view or discuss this issue at https://github.com/w3c/i18n-activity/issues/357 using your GitHub accountReceived on Tuesday, 7 March 2017 17:39:34 UTC
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