From: Chris Jacobs (email@example.com)
Date: Wed Mar 24 2004 - 08:49:25 EST
> It seems strangely inconsistent to me that Unicode has detailed controls
> for horizontal layout direction and the complex bidi algorithm, but has
> nothing for vertical layout. I can force Latin text to be rendered right
> to left or Hebrew left to right (although such overrides are hardly
> plain text issues), but there is no way I can select vertical layout
> even for languages in which that is a normal way of writing. We already
> have U+202A LEFT-TO-RIGHT EMBEDDING and U+202B RIGHT-TO-LEFT EMBEDDING.
> It would be easy to define new characters TOP-TO-BOTTOM EMBEDDING and
> BOTTOM-TO-TOP EMBEDDING, with similar scope until the next PDF
Which scripts are written bottom to top in vertical layout?
If I remember well then both latin and hebrew script are written top to
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