[[Documentation]] Two visualizers for hierarchical graph rewriting are available; [[UNYO-UNYO 2G]] and the latest [[UNYO-UNYO 3G:http://www.ueda.info.waseda.ac.jp/~wakako/wiki/index.php?UNYO-UNYO]]. Click them for details. English version of the UNYO-UNYO 3G info will be available below shortly.