Mark things with [Bv2.1_paragraph]
[/] done
[*] not done

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6 [/]
6.1 must be smpte [/]
    immersive audio DCPs must comply with 429-18, 429-19 [*] don't have these standards
6.2 Language and Territory must comply with RFC 5646
    - subtitle reel <Language> [/]
    - subtitle XML <Language> [/]
    - sound MXF Language [/]
    - ccap reel <Language> [/]
    - MainSubtitleLanguageList [/]
    - RFC5646SpokenLanguage [*] awkward; held in MXFs and duplicated in CPL metadata
    - CPL metadata ReleaseTerritory

7 [/]
7.1 picture essence encoding; frame size, rate and 2D/3D will be one of the four allowed combinations