它规约了开发人员必须收集的信息和控制需求变更的机制。
It specifies information the developers must collect and mechanisms for controlling requirements changes.
这个视图再由设计师来细化，设计师开发服务规约说明——结构上的和行为上的——这个服务规约说明担当服务的客户和实现者之间契约的作用。
This view is further detailed by designers, who develop the service specifications — both structural and behavioral — that act as the contracts between the services' clients and implementers.
一旦确定了一些用例和补充规约，就可以决定它们的开发次序。
Once some use cases and supplementary requirements are identified, they are prioritized, so that their order of development can be decided.
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