From: fantasai (fantasai.lists@inkedblade.net)
Date: Tue May 10 2011 - 15:19:54 CDT
There's a Unicode FAQ on the Unicode website:
   http://unicode.org/faq/bidi.html
The second question is
   "Which scripts are written vertically?"
But the answer given does not answer the question. The only script
it lists explicitly is Mongolian; the rest of the text is just some
background information on what vertical layout might entail.
I would actually like to have a definitive answer to this question. :)
Can the unnamed person responsible for this FAQ please update it?
The best I've been able to come up with so far is:
   Bopo   Bopomofo
   Egyp   Egyptian Hieroglyphs
   Hira   Hiragana
   Hrkt   Hiragana / Katakana
   Kana   Katakana
   Hani   Han
   Hang   Hangul
   Mong   Mongolian
   Ogam   Ogham
   Phag   Phags Pa
   Yiii   Yi
(All of which are top-to-bottom, except maybe Ogham, for which I've
received conflicting information.)
But I am not sure that this list is complete.
~fantasai
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