[2] CATP/1.0 chap.4.6, , https://catill.bitbucket.io/CATP/catp/chap406.html
[4] null, , https://catill.bitbucket.io/CATP/catp1.1/honbun.html#_Toc464618970
[1] About regexp of SCAN METHOD, , https://web.archive.org/web/20010116165900/http://www.nii.ac.jp/CAT-ILL/INFO/newcat/jissou_siyo/catp-regexp.html