23 August 2001


Arnaud Le Hors, W3C
Robert S. Sutor, IBM Research (for DOM Level 1)

Several of the following term definitions have been borrowed or modified from similar definitions in other W3C or standards documents. See the links within the definitions for more information.

An ancestor node of any node A is any node above A in a tree model of a document, where "above" means "toward the root."
A child is an immediate descendant node of a node.
A descendant node of any node A is any node below A in a tree model of a document, where "below" means "away from the root."
DOM Level 0
The term "DOM Level 0" refers to a mix (not formally specified) of HTML document functionalities offered by Netscape Navigator version 3.0 and Microsoft Internet Explorer version 3.0. In some cases, attributes or methods have been included for reasons of backward compatibility with "DOM Level 0".
An object is live if any change to the underlying document structure is reflected in the object.
Two nodes are siblings if they have the same parent node.
The description given to various information items (for example, attribute values of various types, but not including the StringType CDATA) after having been processed by the XML processor. The process includes stripping leading and trailing white space, and replacing multiple space characters by one. See the definition of tokenized type.
well-formed document
A document is well-formed if it is tag valid and entities are limited to single elements (i.e., single sub-trees).
XML name
See XML name in the XML specification ([XML]).