[1] plain2 fan (japanese) ( 版) <http://web.archive.org/web/20060214041744/http://shika.aist-nara.ac.jp/products/plain2/plain2-j.html>
[2] plain2 の利用 ( 版) <http://web.archive.org/web/20051103135630/http://shika.aist-nara.ac.jp/products/plain2/plain2-more.html>
[3] plain2 -README- ( ���) <http://web.archive.org/web/20051103141043/http://shika.aist-nara.ac.jp/products/plain2/jpn/plain2-readme2.jpn.html>