There are multiple independent wiki sites on Japanese WWW documenting these things including historical changes and standard protocols as observed, for obvious

There are multiple independent wiki sites on Japanese WWW documenting these things including historical changes and standard protocols as observed, for obvious reasons, in case anyone needs some data... https://w.atwiki.jp/trainmelody/pages/273.html https://w.atwiki.jp/trainmelody/pages/273.html https://wikiwiki.jp/sta_melodys/%E5%B1%B1%E6%89%8B%E7%B7%9A https://wikiwiki.jp/sta_melodys/%E5%B1%B1%E6%89%8B%E7%B7%9A https://atosmatome.wiki.fc2.com/wiki/%E6%9D%B1%E4%BA%AC%E9%A7%85 https://atosmatome.wiki.fc2.com/wiki/%E6%9D%B1%E4%BA%AC%E9%A...