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Add a normative section about Tag level emptying #770

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merged 3 commits into from May 29, 2023
Merged

Add a normative section about Tag level emptying #770

merged 3 commits into from May 29, 2023

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robUx4
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@robUx4 robUx4 commented May 29, 2023

That's a rewritten section of a rule that exists in the Tags document.

Plus some cleaning.

@robUx4 robUx4 added clarifications spec_main Main Matroska spec document target ADReview changes suggested during IETF AD Review labels May 29, 2023
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doesn't apply to a level but the actual value to use is not known,
an empty `TagString` ((#tagstring-element)) or an empty `TagBinary` ((#tagbinary-element)) element **MUST** be used as the tag value for this level.

See [@?MatroskaTags] for more details on common tags values.
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Isn't "common tags values" wrong here? If you think about the Matroska tagging system as a listed of key/value pairs, the "value of a tag" is e.g. "Mozart", not "COMPOSER". I guess you're trying to refer to the common values of the TagString element here, but that's not what a lay person would understand to be the "value of a tag".

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I reword it to be a little more precise on what to expect there.

This is the same normative information currently found in the Tags document.
In the end there's no paragraph to talk about this informational string.
@robUx4 robUx4 merged commit 46f7b0a into master May 29, 2023
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@robUx4 robUx4 deleted the tag-level branch May 29, 2023 13:28
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