# XML 的一些总结

### xml:lang and xml:space

As of the last update of this document, the XML 1.0 Specification (Fifth edition) (and also the XML 1.1 Specification Second edition) defines two attribute names in this namespace:

xml:lang
Designed for identifying the human language used in the scope of the element to which it's attached.
xml:space
Designed to express whether or not the document's creator wishes white space to be considered as significant in the scope of the element to which it's attached.

### xml:base

The XML Base specification (Second edition) describes a facility, similar to that of HTML BASE, for defining base URIs for parts of XML documents. It defines a single attribute, xml:base, and describes in detail the procedure for its use in processing relative URI refeferences.

### xml:id

The xml:id specification defines a single attribute, xml:id, known to be of type ID independently of any DTD or schema.

XML特殊符号

 < < > > & & ' ' " "

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posted @ 2020-03-12 16:06  zhaotianff  阅读(139)  评论(0编辑  收藏  举报