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。
JPDL process definitions are deployed not as JBoss applications, but rather in the process database.
JPDL的流程定义并不是作为JBoss应用部署的，而是保存在流程数据库中。
The main constructs defined by JPDL includes nodes and execution context. JPDL defines the following types of nodes
JPDL主要由节点和执行上下文组成。
Packt Publishing provided InfoQ readers with an excerpt describing basic constructs of the jPDL language. The excerpt is a part of chapter 4: jPDL Language.
Packt Publishing专为InfoQ读者提供了书摘，描述了jPDL语言的基本结构，这篇书摘是取自该书的《第4章：jPDL语言》。
Note that previously, jBPM was known only for the jPDL language, where now jBPM is a platform for process languages and jPDL is one of the supported languages.
注意，jBPM以前只支持jPDL语言，但jBPM现在是一个过程语言平台，jPDL只是所支持的语言之一。
In order to simplify creation and analysis of business processes, JBoss provides an Eclipse plugin for visual creation and manipulation of JPDL processes (Figure 7).
为了简化业务流程的创建和分析，JBoss提供了一个Eclipse插件，通过它可以可视化的创建和维护JPDL流程(如图7所示)。
Suppose that in one project you use BPEL for service orchestration, jPDL for managing the tasks for people and pageflow to specify the navigation between pages of a web application.
设想这样的一个项目，你用BPEL来做服务编制，jPDL来管理人工任务，pageflow来定义一个WEB应用的页面流转。
There is no specialized support for this pattern in JPDL, but it was easy enough to create two custom handlers, implementing this functionality (Listing 1, Listing 2 in the Appendix).
在JPDL中并不支持这种模式，但是定义两个自定义的处理器就可以很简单地实现这个功能(见附录中的列表1，列表2)。
There is no specialized support for this pattern in JPDL, but it was easy enough to create two custom handlers, implementing this functionality (Listing 1, Listing 2 in the Appendix).
在JPDL中并不支持这种模式，但是定义两个自定义的处理器就可以很简单地实现这个功能(见附录中的列表1，列表2)。
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