设计良好、灵活和可扩展。
文章借鉴了RDF的简单、灵活和可扩展的优点，提出一种简单、通用和可扩展的元数据模式表示方法。
This article provides a simple, general and extensible definition method of metadata model in reference of the virtues of RDF, such as simplicity, flexibility and extensibility.
您将从本系列后续文章中看到，Facelets提供了许多强大的特性来帮助您实现健壮、灵活和可扩展的用户界面。
As you will see in the subsequent articles in this series, Facelets provides many powerful features to help you implement robust, flexible, and extensible user interfaces.
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