Analysis of internal tags in HTML file headers nowadays, it is very easy to make a home page with various WYSIWYG tools. However, knowing the source code and grammar of HTML is undoubtedly more helpful for us to make a home page, and also allows users to control the effect of the page more accurately. There have been many articles introducing HTML syntax, but there are several other tags besides the TITLE tag in HEAD. Although these markers are not commonly used, we need to know something about them. The 1.Meta tag is used to describe some document information that is not included in standard HTML. The fierce competition makes browser manufacturers use META to develop many practical functions and make these functions effective in common browsers. Here are some useful usages: *