Adding and removing

可通过 Package Manager 窗口执行多种任务：

• Install a feature set
• 从注册表安装新的包
• 从本地文件夹安装新的包
• 从本地 tarball 文件安装新的包
• 使用 Git URL 安装新的包
• Add a registry package by name
• Remove an installed package from a project
• 禁用内置包
• Switch to another package version
• 将 Asset Store 资源包导入项目
• 更新 Asset Store 资源包
• Remove imported assets from a project
• Delete a package from the Asset Store cache
• Perform an action on multiple packages or feature sets

The procedures described in these sections obscure a lot of the details of what the Package Manager is actually doing behind the scenes. The Package Manager window provides an intuitive interface to install and uninstall packages, by adding and removing packages as project dependencies in your project’s manifest, and then selecting the correct version to install. The version that Package Manager selects doesn’t always match the version you indicated. For more information, see Dependency and resolution.