The creative use of the font, size, and color attributes can be used to display some special text effects. A character entity is a tag representing a special character such as the paragraph or copyright symbols or the umlaut etc. In general, for any key that requires more than pressing the shift key to type it on screen, a character entity should be used. The left and right angle brackets, ampersand, and double-quotes are reserved for HTML code. To display them properly in a browser, a character entity must be used.
Character entities are case sensitive.
For a complete list of character entities see the excellent ISO 8859-1 Table by Martin Ramsch. They are very useful and flexible elements. Each item begins with a bullet. Each item begins with a numeral. No bullets or numerals, each definition is indented beneath the item it refers to.