Completely new API and XML document structure. Simpler, cleaner and more flexible.

全新的API和XML文档结构. 更加简单, 清晰和灵活.

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XML allows the author to define his own tags and his own document structure.

XML允许编者自定义标签和文档结构.

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Several document information hiding algorithms are brought forward, based on analysis of PDF document structure.

通过分析PDF文档结构,提出了几种实用的文本信息隐藏算法.

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