(paragraph tag) tag in HTML is used to define a paragraph in a webpage. A hyperlink is a connection between one page of a hypertext document to another, they appear blue on the page, and are sometimes underlined, but the underline can be disabled with certain HTML. Basic HTML Codes . Content aside from the page content. 31) An HTML program is saved by using the ____ extension. Action. A markup language is a computer language that is used to apply layout and formatting conventions to a text document.