JSFL包括一系列的顶级函数(top-level functions)和一个顶级对象（top-level Object），能够利用flash 或fl来引用这个对象。例如说要关闭所有在编辑环境下曾经敞开的文档，能够利用以下语句：
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The title and other information about the feed can be accessed from this top-level object.
可以从这个顶级对象访问这个提要的标题和其他信息。
Another top-level object in the system is the user object, which allows you to set up accounts for different users coming to your site.
系统中的另一个高层对象是用户对象，它允许为访问站点的用户设置帐号。
Select the application object, which is the top-level object, and on the right side are the associated members as shown in figure 1.
选择最顶层的应用程序对象，右侧就是相关的成员，如图1所示。
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