处理指令和注释也简化了标签名，这在XML中是无法实现的：前者用PI，后者用COMMENT。
Processing instructions and comments are also reduced to special tag names that are not available in XML: PI for the former, comment for the latter.
文本节点或 XML 注释等其他节点没有节点名称，因此无法重命名。
Other nodes, such as text nodes or XML comments, do not have a node name and therefore cannot be renamed.
过度使用注释会使包含在程序元素的签名和动态上下文中的原有信息无法得到充分利用。
Overusing annotations under-utilizes the information inherently contained in the program element's signature and dynamic context.
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