Empty Elements

Empty elements have no content.  If you will recall, there are two ways to represent an empty element.

<empty.element></empty.element>

or

<empty.element/>

If you intend to model your content using one or more empty elements, you must declare them as such in the DTD.  This is done using the EMPTY keyword.  The syntax is for defining empty elements is:

<!ELEMENT empty.element EMPTY>

Tip:	You will typically use empty elements only when you are going to associate attributes with that element.  We are going to discuss attribute declarations shortly.