In this Article, the term "Heishutsu" meant a special wording which had always to be put at the top of each line in the description of any official documents, and the term "Oso" was quoted as the heishutsu word in this Article.
平出〔皇祖〕（公文書において用いる際に改行を行わなければならない語句（本条では「皇祖」を掲げる））