parsed entity

基本解释

XML parsed entities (both internal and external) MUST be resolved before tokenisation.
XML 解析过的实体（包括内部和外部的）必须在进行标记化之前处理掉。
Section 4.13 discusses general parsed entities internal as well as external and leans towards overall discouragement of their use. To quote the RFC
节讨论了一般内部和外部可解析实体，倾向于不鼓励使用这类实体。
I would suggest that readers be a bit more circumspect than RFC 3470 section 4.13 and make a case-by-case evaluation of the suitability of general parsed entities in XML-based specifications.
我建议，读者应该比 RFC 3470 4.13 节的建议更慎重一点，逐个分析一般可解析实体在基于 XML 的规范中的适用性。