确定规模和范围是驱动项目各个方面的动力，约束那些在产品的开发和升级中所采用的行动，以及限制可以提供的选项。
Sizing and scoping drives every aspect of the project, constrains the actions that can be taken in the development or upgrade of a product, and limits available options.
考虑下面的选项，然后确定哪些约束对您的应用程序非常重要。
Consider the options, and decide which constraints are important for your application.
例如，在清单5中，一个选项被约束到文件系统的特定部分，重写也可以是有作用域的。
For example, in Listing 5, where an option is restricted to a certain part of the file system, overrides can also be scoped.
应用推荐