http://labs.nttrd.com/cgi-bin/index.cgi?m=q&q=%BE%E5%A4%CF%B9%BF%BF%E5%B2%BC%A4%CF%C2%E7%B2%D0%BB%F6%A4%CA%A1%BC%A4%F3%A4%C0%A1%A9
意外な機能がヽ(´ー`)ノ