Through the introduction to the using of referable words of traditional documents in the Yuan Dynasty,the structure-dividing role of these words is exemplified in that they could quote the beginning and end of the documents at various levels,show the disposal way and the relation and process of writing from the unit concerned.

This paper points out that official document language has its own characteristics such as inheriting traditional official document words, borrowing the words of other types of writing, absorbing new words, and using inioms.

This principle centers on the moral demands in hierarchical politics, Good Faith is an important notion in the traditional public law culture in China; however, the Good Faith, both in terms of universal morality and based on the goods contracts, did not serve as an independent social morality and law principle in the ancien.

In this paper the key management mechanism on TCP is introduced to the county andtownship electronic document transmission system.

Application of digital signature on official document transmission;

Research of digital signature based on SHA-1 and RSA in official document transmission

Research and practise in network documents issuing system;