36     parentNode = None  variable in Node
90         if newChild.parentNode is not None:
91             newChild.parentNode.removeChild(newChild)
110             newChild.parentNode = self
124         if node.parentNode is not None:
125             node.parentNode.removeChild(node)
140         if newChild.parentNode is not None:
141             newChild.parentNode.removeChild(newChild)
147         newChild.parentNode = self
148         oldChild.parentNode = None
175         oldChild.parentNode = None
263         self.parentNode = self.ownerDocument = None
292     node.parentNode = self
299         node = node.parentNode
331     parentNode = None  variable in DocumentFragment
680         self.parentNode = None
995         self.ownerDocument = self.parentNode = None
1079         if self.parentNode and self in self.parentNode.childNodes:
1081                 self.parentNode.appendChild(newText)
1083                 self.parentNode.insertBefore(newText, next)
1113         parent = self.parentNode
1158     c = node.parentNode
1162         c = c.parentNode
1166     c = node.parentNode
1170         c = c.parentNode
1407         if doctype and doctype.parentNode is not None:
1445             doctype.parentNode = doctype.ownerDocument = doc
1530     parentNode = None  variable in Document
1590         if node.parentNode is not None:
1594             node.parentNode.removeChild(node)
1608         oldChild.parentNode = None
1641             childclone.parentNode = clone