讨论所涉及的产品还支持另外的组织工具，它们主要有助于模型如何被导航以及图如何被分组。
The products under discussion also support additional organizational tools that help primarily with how models can be navigated and how diagrams are grouped.
幸运的是，您不必阅读XML模式文档本身来导航这个模型；niem提供了一些工具来以更图形化的方式搜索和导航这个模型。
Fortunately, you do not have to read the XML schema documents themselves to navigate the model; NIEM provides tools to search and navigate the model in a more graphical fashion.
文中还描述了一个以有穷状态机为工具的导航系统模型。
A navigation system model by using a finite state machine is described.
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