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的结构包括头部（Head）、主体（Body）两大部分，其中头部描述浏览器所需的信息，而主体则包含所要说明的具体内容。-HTML HTML command text is composed of descr iptive text, HTML commands that text, graphics, animation, sound, tables, links and so on. HTML' s structure consists of the head (Head), body (Body) two parts, the head of which the information needed to describe the browser, while the body contains the specific content to be described.