交互式表单的内容和属性都是由一个交互式表单字典定义的，这个字典引用自pdf文件的文档类别的AcroForm条目。
The contents and properties of an interactive form are defined by an interactive form dictionary that is referenced from the AcroForm entry in the document catalog in the PDF file.
交互式表单的内容和属性都是由一个交互式表单字典定义的，这个字典引用自pdf文件的文档类别的AcroForm条目。
The contents and properties of an interactive form are defined by an interactive form dictionary that is referenced from the AcroForm entry in the document catalog in the PDF file.
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