[imsc] Note on itts:forcedDisplay and `<br>` elements makes no sense (#595)

nigelmegitt has just created a new issue for https://github.com/w3c/imsc:

== Note on itts:forcedDisplay and `<br>` elements makes no sense ==
The note about `itts:forcedDisplay` applying to `<br>` elements is a bit bizarre.

Current text:

Specification:

>The `itts:forcedDisplay` attribute has no effect on content layout or composition, but merely determines whether composed content is visible or not.

Then later, note:
>Although `itts:forcedDisplay`, like all the TTML style attributes, has no defined semantics on a `br` content element, `itts:forcedDisplay` will apply to a `br` content element if it is either defined on an ancestor content element of the `br` content element or it is applied to a region element corresponding to a region that the `br` content element is being flowed into.

Since the only purpose of a `<br>` element is to affect layout, the note doesn't make any sense. The layout is by definition unaffected by `itts:forcedDisplay` - moreover, the note even says "has no defined semantics": in that case, what does it mean to apply it?

Suggest removing the note.

Please view or discuss this issue at https://github.com/w3c/imsc/issues/595 using your GitHub account


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Received on Thursday, 13 February 2025 15:03:18 UTC