Semiotics can not only be tools and methods used in LIS, but also be used in LIS researches as basic principles, and also, be used to give explanation of phenomena of LIS.

• 符号学既能作为情报学研究的工具与方法直接应用，也能直接作为情报学研究的基本原理，还可以对情报学中的现象及处理手段提供原理性解释。