This interface represents a notation declared in the DTD. A notation either 
 declares, by name, the format of an unparsed entity (see 
section 4.7 of the XML 1.0 specification [
XML 1.0]), or is 
 used for formal declaration of processing instruction targets (see 
section 2.6 of the XML 1.0 specification [
XML 1.0]). The 
 
nodeName attribute inherited from 
Node is set 
 to the declared name of the notation.
 
The DOM Core does not support editing 
Notation nodes; they 
 are therefore readonly.
 
A 
Notation node does not have any parent.
 
See also the 
Document Object Model (DOM) Level 3 Core Specification.