For PDF, PostScript, or RTF output, convert the fo version of the DocBook document into an output file in the specified format.

对于PDF、PostScript或RTF输出，将DocBook文档的fo版本转换为相应格式的输出文件即可。

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This worked well for generating text output, but would have been difficult to convert to other forms of output (such as a parse event stream for building a DOM representation of the document).

这很适合于生成文本输出，但是在转换成其它输出形式(例如用于构建文档的DOM表示的解析事件流)时会很困难。

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It can also convert content of one system for output in another.

它也可以转换成一个系统在另一个输出内容。

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