Definition list. Used in conjunction with dt to define definition terms and dd, to definition descriptions.

Example

Dog

A carnivorous mammal of the family Canidae.

Meta information. Used to provide information about the HTML page. It must be placed within the head element.

Required Attributes
content is used to specify the meta information itself.
Optional Attributes
name can be used to ...

rel属性指定从源文档到目标文档的关系，而rev属性则指定从目标文档到源文档的关系。
经常使用的文档关系包括：
next 链接到下一个文档
prev 链接到前一个文档
toc 链接到...

Anchor. Primarily used as a hypertext link. The link can be to another page, a part of a page or any other location on the web.
Note: An anchor (a point in a page where a link can jump to) does not need to be defined with the a tag. Applying the...