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tetragonos is a XeLaTeX package for mapping Chinese characters to their codes in the Four-Corner Method. Four-Corner Method is an encoding system for Chinese characters, which attaches Chinese characters with four of five digits according to their shape, so they can be sorted and indexed. A macro for this purpose is provided in the package. This package can only run with xeCJK package and XeLaTeX.

The package manual in Chinese provides more details and explanations to the implementation.


This package is developed and maintained by Yuchang Yang <yang.yc.allium@gmail.com>.

Discussions and questions are welcome.

Copyright and Licence

Copyright (C) 2019 by Yuchang Yang < yang.yc.allium@gmail.com >
This work may be distributed and/or modified under the
conditions of the LaTeX Project Public License, either
version 1.3c of this license or (at your option) any later
version. This version of this license is in
and the latest version of this license is in
and version 1.3 or later is part of all distributions of
LaTeX version 2005/12/01 or later.
This work has the LPPL maintenance status `maintained'.
The Current Maintainer of this work is Yuchang Yang.
This work consists of the files tetragonos.sty,
                                tetragonos.pdf, and

Download the contents of this package in one zip archive (413.5k).

tetragonos – Four-Corner codes of Chinese characters

This is a XeLaTeX package for mapping Chinese characters to their codes in the Four-Corner Method.

Home pagehttps://github.com/Mikumikunisiteageru/tetragonos
Bug trackerhttps://github.com/Mikumikunisiteageru/tetragonos/issues
Version1 2019-01-15
LicensesThe Project Public License 1.3c
Copyright2019 Yuchang Yang
MaintainerYuchang Yang
Contained inTeX Live as tetragonos
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