凡例 meaning in English

notes on the use of a book, etc.; guide to the use of a book, etc

2 , code . necessary explanations for code employed in the writing . 3 , main body
二、凡例：对行文中需要交代的一些问题进行说明。
In his study of the record examples in all dynasties , xue shansheng summed up the form of writing and a series of terms , and set up a relatively complete system of writing records
薛三省在研究历朝实录凡例基础上，对书法进行了形式上的归纳，提炼出了一系列的术语，构筑了相对完整的实录书写方法体系。