JPDL is an XML-based language and consequently is expressed in XML.
JPDL是一种基于XML的语言，可以通过XML表示。
Through the same mechanism, languages like jPDL are very easily extensible.
通过这种机制，语言本身也非常容易扩展，如JPDL。
JPDL on the other hand is an executable process language that puts the focus on modelling freedom.
从另一个方面来讲，jPDL是一门关注自由建模的可执行语言。
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