Some of the former opinion mistook it for Liushu s zhuanzhu, but I consider it has nothing done with ZhuanZhu and refer to the Identity or the artistic conception revealed in the work of a calligraphy, XuShen s reference of MouyuMoutong asked to seek the artistic conception through it which is used to rectify the calligraphy in the historic research.
在同意体例中有“某与某同”一类,前人有匡正字体之说,许慎所说“某与某同”实际是要求人们借此以求笔意,“同意”和“某与某同”都是用两个或两个以上的字相互发明来揭示笔意的。