Element Declarations
Keyword ELEMENT Introduces a new element <!ELEMENT title ………>
Element name must begin with a letter, and may additionally contain digits and some punctuations, i.e. ‘.’, ‘-’, ‘_’, and ‘:’
If an element can hold no child elements, and also no text, then it is known as empty element and denoted by EMPTY
An element declared to have a content of ANY may contain all of the other elements declared in the DTD
<!ELEMENT p ANY> <!ELEMENT image EMPTY>
Empty element usage: <image></image> or <image/>