By default it adds your preferences and bookmarks , if you want to add themes and extensions you will have to download the . Jar and . Xpi files and add them to the files to be added to the installer .

默认情况下它会添加你的偏好和书签，如果你想添加主题和扩展，你需要下载.jar和.xpi文件并将它们添加到要添加到安装包的文件中。