label
<P> paragraph tag </ p>
</ Br> tag CRLF
<Em> tag inclination emphasized </ em>
<Del> tag Strikethrough </ del>
<Img src = "path" alt = "can not be loaded when the picture is displayed text"> (picture)
<a href="超链接网址" target="_blank"(打开新的窗口)> </a>
<Form (Form) action = "admin" method = "post" (encrypted transmission) get (transmitted without encryption)>
<Input type = "type" name = "name" id = "number" placeholder = "prompt information" />
</form>