What is HTML?
HTML (or XHTML) is a coding language used to create Web pages. With HTML, you surround a block of text with "tags" that indicate how the text should appear or what purpose it has in a document. For example:
This is a Heading
This is a paragraph in an HTML document.
There is a "p tag" at the beginning of this paragraph
and a closing "p tag" at the end.
These tags tell the Web browser how to display this text.
See Where can I learn more about HTML? for links to websites with more information about using HTML.