The <HTML> tag encloses all other HTML tags and associated text within your document. It is an optional tag. You can create an HTML document that omits these tags, and your browser can still read it and display it. But it is always a good form to include the start and stop tags.
The format is:
Your Title and Document (contains text with HTML tags) goes here
Most HTML tags have two parts, an opening tag and closing tag. The closing tag is the same as the opening tag, except for the slash mark e.g</HTML>. The slash mark is always used in closing tags.
An HTML document has two distinct parts HEAD and BODY.
<title>Title of the document</title>
Content of the document......