图书分类理论体系的确定,同时也决定了图书分类表的制度和形式,根据各科内容的繁简和彼此的关系,就有了分类表上的大纲小目,这些大纲小目的先后次序和从属关系,就需要有一套符号把它们编定下来、表达出来,这套符号就是图书分类表上的标记制度。标记制度是图书分类表的一个组成部分。有了标记,就可以把它记在书上和分类目录卡片上,从这个标记,一方面可以表示该书属于“那一类”,一方面也可以表 The classification of theoretical system of book classification, but also determines the system and form of the book classification table, according to the content of each section of the complexity and mutual relations, there are the outline of the classification table, the order of these small outline and Affiliation, you need to have a set of symbols compiled down, expressed, this set of symbols is a book classification system of the mark. Marking system is an integral part of the book classification. With the mark, you can put it on the book and the classification card, from this mark, on the one hand it can be said that the book belongs to “that category”, on the one hand can also be