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Can someone please explain in more details what UpTeX / UpLaTeX really is?

I can only find japanese documenation about it.

I knew some ways to type CJK-fonts and directions with TeX and its engines but never heard of UpTeX before.

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up vote 8 down vote accepted

It is the Unicode version of pTeX (pLaTeX), a japanese version of TeX (LaTeX). In difference to pTeX it can use all unicode characters:

Edit: OpenType fonts (such as Hiragino, Kozuka) can be used also with pTeX. Actually, pTeX and upTeX do nothing about fonts; whether a font can be used with them depends on dvipdfmx.

\documentclass[dvipdfmx]{utarticle} % dvipdfmx driver option (for color) required, for post-processing of dvipdfmx
\usepackage{color} % not required for this example...
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You have to run the example with uplatex which creates a dvi output which then has to be convert into a pdf with dvipdfmx:

enter image description here

And, of course, it is easier to use as xelatex with the cjk packages. More information is available from http://www.t-lab.opal.ne.jp/tex/uptex_en.html

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This looks really nice. However, I wonder if the Japanese actually use arabic numerals. – Henri Menke Feb 23 at 8:13
@HenriMenke: you mean 1 and so on? Yes, they do. – Smar Feb 23 at 10:03
Great, never heard of it before. And the 1 million $ question: Is there a nice and easy way to write Kanji with furigana (Hiragano on top/right of it)? I only now the \ruby solution from XeLaTex. – buhtz Feb 24 at 7:49
I Never used it. Have a look into the manual – Herbert Feb 24 at 13:19
I'm a Japanese, and I prefer upLaTeX to XeLaTeX for two reasons: first, XeTeX doesn't support vertical writing, but upTeX does. Second, horizontal writing of upTeX is also more beautiful than that of XeTeX, as upTeX engine itself supports many features required for Japanese typesetting. You can use \ruby from pxrubrica.sty in upTeX and pTeX, which is available from CTAN. – Hironobu YAMASHITA Mar 1 at 13:25

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