HTML is the markup language used to structure web pages and includes tags like <em> and <code>. It stands for Hyper Text Markup Language. URLs provide a specific reference to online resources and are displayed in the address bar of web browsers. Common examples are search engines like Google, Ask, and Yahoo that are used to search for information on the World Wide Web, also known as the W3.

2.  HTML stands for Hyper Text Markup
Language
 Every single Web page on the Internet has
some HTML markup included in its source.

3.  HTML “tag” is a markup language, it means
that it is written with codes
 examples:
 1. <em>
 2. <dfn>
 3. <code>

4.  WYSIWYG is acronym that stands for "What
You See is What You Get" in computer terms.

5.  It means “Uniform Resource Locator”
 Is a specific character string that constitutes a
reference to a resource.
 Usually the URL of a web page is displayed on
top inside an adress bar
 Examples:
 "http://en.example.org/wiki/Main_Page"

6.  Is a software system that is used to search
any kind of information on the WWW
 Examples:
 Google.com
 Ask.com
 Yahoo.com

7.  It means Word Wide Web
 It is also abbreviated as w3