The documentary library of this system is layer structured program moduIarized and is written by COBOL which is supported by VS OS 5.0, consisting of 2300 COBOL statements.

• 本系统文献库采用层次结构；系统程序为模块化结构；用VS操作系统(5.；0版本)支持下的COBOL语言写成；使用COBOL语句2300条。