[1] XUL Apps > XHTML Ruby Support - outsider reflex, YUKI "Piro" Hiroshi, https://piro.sakura.ne.jp/xul/_rubysupport.html
[2] GitHub - piroor/rubysupport: XHTML Ruby Support, Adds XHTML Ruby support. Ruby texts will be rendered above the base texts, as a small text., https://github.com/piroor/rubysupport
[3] >>2 の履歴の最古を見ればわかるように、当初は >>4 の一機能だった (今は言及すらないが)。 >>5 はその当時のもの。
[4] XUL Apps > ContextMenu Extensions - outsider reflex, YUKI "Piro" Hiroshi, https://piro.sakura.ne.jp/xul/ctxextensions/
[5] My Works/ContextMenu-Extensions for Mozilla - outsider reflex, Piro(SHIMODA Hiroshi), , https://web.archive.org/web/20011030120333/http://www.cc-net.or.jp/~piro/works/_moz-extensions.html