Wording for application of base direction about wpub HOT 7 CLOSED

I think Appendix D needs some work. I'll raise a separate issue for that.

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This could require wrapping additional control characters or markup around the string prior to display, in order to apply the base direction.

May be recommend the use of markup, if any.

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@ntounsi the text already says "control characters or markup". I should admit, though that i missed the markup word, too, on first read. Maybe switch the order ?

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@r12a @ntounsi I have just made a PR with the (original) text in PR #442

That being said, I am not sure what markup you refer to, @ntounsi. HTML markup has been considered (as an RDF HTML Datatype), but there was a strong pushback against it; I would prefer to add this to the document.

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@r12a may be some thing like
"This could require wrapping additional markup around the string or control characters prior to display, in order to apply the base direction."
@iherman for display purpose, markup can have some (side) effects on rendering that control characters don't have, e.g. RTL text are aligned right with dir attribute, but not with control characters.

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@ntounsi

Just for my understanding: do you want to add this text in the 'note' above? In which case I have no problem with it.

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@iherman No. Just to explain why I said that markup is preferable to control characters.

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