All local project.xml files can either override the properties set in the main project or they can define new or special Settings for the individual sub-project.
所有本地project . xml文件既可以在主项目中覆盖这些属性的设置，也可以为单个子项目定义新的或特殊的设置。
In some cases, it might be desirable to provide quick access to specific settings of an application's sub-views.
在某些情况下，提供一个应用程序中常用设置的快速通道会给用户带来方便。
In the case of apps like Settings, it can be annoying when you last closed the app after digging several levels deep into various sub-menus.
但是对于“设置”这样的应用来说很麻烦，比如你上次翻了好几级菜单才关闭该应用。
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