This file, called an <a href="%(url)s">Install Manifest</a>, is used by Add-on Manager-enabled XUL applications to determine information about an add-on as it is being installed. It contains metadata identifying the add-on, providing information about who created it, where more information can be found about it, which versions of what applications it is compatible with, how it should be updated, and so on. The format of the Install Manifest is RDF/XML.
这个文件被称为<a href="%(url)s">安装清单</a>，用于在带有附加组件管理器的 XUL 应用程序安装附加组件时确认其信息。它包含了用来识别附加组件的元数据，并提供了关于创建者、兼容的应用程序和版本、应如何更新以及何处能找到更多信息等诸如此类的信息。安装清单的格式是 RDF/XML。