由于在基本编辑模式下无法定义所需的可选输入条件，因此在该模式中绘制的大多数逆向连接都会导致模型死锁。
The required alternative input criteria cannot be defined in the basic editing mode, so most backward connections drawn in basic editing mode add a deadlock to the model.
还可以使用其他方法来建立模型，比如手动地从模式、或者通过对代码进行逆向工程建立模型。
Models can be built by hand, from patterns, or by reverse-engineering code, among other approaches.
实现逆向样式表从XML模式生成uml模型也是可能的(并且常常是人们所期望的)。
It is also possible (and often desirable) to implement the reverse stylesheet to generate UML models from XML schemas.
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