HTML Entities

1. What do you have to do to display a special character in such as (<) in an HTML document? To actually display reserved characters, we must use character entities in the HTML source code.
2. What are the three parts of a character entity? 
3. What is an entity name? What is an entity number? &nbsp; &#160;
4. What is better to use an entity name or an entity number? The advantage of using an entity name, instead of a number, is that the name is easier to remember.
5. What is the most common character entity in HTML? A common character entity used in HTML is the non-breaking space (&nbsp;).