相关DOCTYPE的文学知识

Toenablevalidation,youincludethedocumenttype(DOCTYPE)inyourXMLdocumentsnearthetop.Or,theycopiedtheDOCTYPEtagoutofabookanddon'tknowwhatitmeans.然后在DOCTYPE的方括号()内部输入代码，如清单6所示。下一部分...