Copyright(C) 2001,2002 HIROSAWA Masashi hirosawa@cam.hi-ho.ne.jp http://www.cam.hi-ho.ne.jp/~hirosawa/DynamicDraw/
Contributor Masayuki Fukushiro yt3m-fksr@asahi-net.or.jp http://www.dynamicdraw.com/jp/index.html