说明：  HTML称为超文本标记语言，是一种标识性的语言。它包括一系列标签．通过这些标签可以将网络上的文档格式统一，使分散的Internet资源连接为一个逻辑整体。HTML文本是由HTML命令组成的描述性文本，HTML命令可以说明文字，图形、动画、声音、表格、链接等。
(HTML, called hypertext markup language, is a kind of markup language. It includes a series of tags. Through these tags, the document format on the network can be unified, and the distributed Internet resources can be connected as a logical whole. HTML text is a descriptive text composed of HTML commands. HTML commands can describe text, graphics, animation, sounds, tables, links, etc.)