定制标记有两个方法，分别返回组件类型和渲染器类型。

The custom tag has two methods that return the component type and the renderer type.

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代码将处理输入，制定决策并生成显示数据，而标记将期待获得数据并提供所需的支架以渲染信息。

Code would process input, make decisions, and produce data for display, while markup would anticipate the data and provide the scaffolding required to render the information.

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基本HTML标记支持、行内图形、链接的容器和内置的超链接是Flex 4 SDK中最热门的文本渲染新功能。

Basic HTML markup support, inline graphics, linked containers, and embedded hyperlinks are some of the hottest new features for text rendering in the Flex 4 SDK.

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