Hi,
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As to your question: the
word "retrofitted" means that something old has been modified to work according to some new standard. It's not any kind of special computer term, just an ordinary English word. For example, the old classes java.util.Vector and java.util.Hashtable were "retrofitted" to implement the interfaces java.util.List and java.util.Map, respectively; these interfaces were introduced in JDK 1.2, while the original classes have existed since JDK 1.0 .