The interface is modeled after DOM1 Spec for HTML from W3C. The DTD used in this DOM model is from http://www.wapforum.org/DTD/wml_1.1.xml
All WML Elements are derived from this class that contains two core attributes defined in the DTD.
The 'class' attribute of a element that affiliates an elements with one or more elements. (Section 8.9, WAP WML Version 16-Jun-1999)
The element's identifier which is unique in a single deck. (Section 8.9, WAP WML Version 16-Jun-1999)