This document provides information on common HTML tags used to structure and format web page content. It defines tags such as <HEAD>, <TITLE>, <BODY>, <CENTER>, <P>, <B>, <I>, <U>, <UL>, and <OL> and provides examples of how each is used. The <HEAD> contains meta information, <TITLE> defines the page title, <BODY> contains the visible page content, and other tags like <P>, <B>, <I>, and <U> format text. Additionally, <UL> and <OL> create unordered and ordered lists, respectively.