The working documents\' backup/recovery in embedded system is a practical issue,compared to the ordinary computer,the application in embedded system must take up less system resources.

Document workflow based on components techniques includes document workflow definition, document workflow monitoring, work-list, document workflow enactment.

On the Form and Development of Management of Documentary Files in Organs during the Period of Republic of China;

Collaborative Document-based Heterogenized Workflow Management Collaborative Model;

This model,with PBS as sign system,delaminated according to time,information content and document type is a kind of project document code catalog integrated structure.

Aiming at providing some insights for unified management of project documents, the paper establishes a standard document model which is realized through SGML, in order to structuralize the content of project documents.