You can now change the behavior for one of the elements without changing either the document handler code or the code for the other elements.
现在可以改变一个元素的行为，而不必修改文档处理程序代码或者其他元素的代码。
2
When the behaviorof one or more key architectural elements is event-driven, modeling with State Diagrams can be especially useful in understanding that behavior.
当一个或多个关键架构要素的行为是事件驱动时，用状态图建模可以对理解该行为特别有用。
3
Service specification is about designing the structure and behaviorof the service elements that are architecturally significant.