一、概述1档案存取类INSERT,UPDATE,DELETE,SELECT,FETCH……..2画面处理类DISPLAY,REQUEST,MESSAGE……..3处理参数类CHANGE,DEFINE,GROUP_BY……..4控制程序逻辑类BEGIN_LOOP,END_LOOP,DOUNTIL,CASE,EXECUTE……5处理LIST类DEF_LIST,ADD_ENTRY,GET_ENTRY,SELECT_LIST…..6资料检查类BEGIN_CHECK,END_CHECK,FILECHECK……7报表处理类DEF_HEAD,DEF_LINE,KEEP_COUNT,PRINT….