destination document

基本解释

If the destination document has the entity defined, its value is assigned.
如果目標文档定義了實躰，則給它賦值。
Instead, it creates a clone of the source node and its descendents that you can then insert into the destination document.
相反，它先創建源節點及其下屬節點的一個尅隆版本，再將這個尅隆版本插入到目標文档中。
One characteristic of TRANSer is that it allows multiple source XML documents to map to the destination XML document which can be created or edited when designing.
它允許多個源XML文档映射到目標XML文档，還可以在設計映射關系的同時創建和脩改目標XML文档的格式。