ISSUE-445: Line breaking algorithm

Line breaking algorithm

TTML WebVTT mapping note
Raised by:
Pierre-Anthony Lemieux
Opened on:
#lineBreak-uax14 is specified as "may be used."

Shouldn't it be "must implement" since CSS [*] appears to use the UAX14 algorithm for line breaks?

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Related emails:
  1. {agenda} TTWG Meeting 2015-09-24 (from on 2015-09-23)
  2. ISSUE-445: Line breaking algorithm [TTML WebVTT mapping note] (from on 2015-09-23)

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David Singer <>, Nigel Megitt <>, Chairs, Thierry Michel <>, Philippe Le H├ęgaret <>, Atsushi Shimono <>, Staff Contacts
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