WFMC 为工作流系统制定了5类功能接口。该文档介绍接口1——过程定义输入 / 输出接口，这口包含了一个用于描述过程定义的公共元模型，以及过程定义间进行相互转换的XML Schema。-redundant work flow system for the development of the five functional interface. The document introduced Interface 1 -- process definition input / output interface, which I included a descr iption of the process for the definition of public model, and process definition conversion between XML Schema.