1)Action Specification,作用说明2)scope of a declaration,说明作用域3)Use Instructions;Use Directions; Usage Instructions;Directions for Use;Operating Instructions;How to Use,使用说明;用法;操作说明4)clarification,澄清，纯化，净化(作用);说明5)operation instruction,操作规程，使用说明书6)job description,作业说明