Update the docstring.
Add a Node class that defines the NodeType constants, based on discussion
in the XML-SIG.
diff --git a/Lib/xml/dom/__init__.py b/Lib/xml/dom/__init__.py
index 7096c39..0c9049e 100644
--- a/Lib/xml/dom/__init__.py
+++ b/Lib/xml/dom/__init__.py
@@ -1,10 +1,39 @@
"""W3C Document Object Model implementation for Python.
-The Python mapping of the Document Object Model is documented in <...>.
+The Python mapping of the Document Object Model is documented in the
+Python Library Reference in the section on the xml.dom package.
This package contains the following modules:
minidom -- A simple implementation of the Level 1 DOM with namespace
- support added (based on the Level 2 specification).
+ support added (based on the Level 2 specification) and other
+ minor Level 2 functionality.
+
+pulldom -- DOM builder supporting on-demand tree-building for selected
+ subtrees of the document.
"""
+
+
+class Node:
+ """Class giving the NodeType constants."""
+
+ # DOM implementations may use this as a base class for their own
+ # Node implementations. If they don't, the constants defined here
+ # should still be used as the canonical definitions as they match
+ # the values given in the W3C recommendation. Client code can
+ # safely refer to these values in all tests of Node.nodeType
+ # values.
+
+ ELEMENT_NODE = 1
+ ATTRIBUTE_NODE = 2
+ TEXT_NODE = 3
+ CDATA_SECTION_NODE = 4
+ ENTITY_REFERENCE_NODE = 5
+ ENTITY_NODE = 6
+ PROCESSING_INSTRUCTION_NODE = 7
+ COMMENT_NODE = 8
+ DOCUMENT_NODE = 9
+ DOCUMENT_TYPE_NODE = 10
+ DOCUMENT_FRAGMENT_NODE = 11
+ NOTATION_NODE = 12