Originally, it was just an order of precedence at the court functions but later it started to have political meanings in events that the top Cabinet member serve as the Acting Prime Minister.
本来は単なる宮中行事の席次表であったが、内閣総理大臣臨時代理を設ける際に宮中席次最高位の閣僚が務めるなど、政治的意味も持つようになった。