docs: def copy(self):
  		"""
  		Construct and return a new Table document subtree whose
  		structure is the same as this table, that is it has the
  		same columns etc..  The rows are not copied.  Note that a
  		fair amount of metadata is shared between the original and
  		new tables.  In particular, a copy of the Table object
  		itself is created (but with no rows), and copies of the
  		child nodes are created.  All other object references are
  		shared between the two instances, such as the RowType
  		attribute on the Table object.
  		"""
  		new = copy.copy(self)
  		new.childNodes = map(copy.copy, self.childNodes)
  		for child in new.childNodes:
  			child.parentNode = new
  		del new[:]
  		new._end_of_columns()
  		new._end_of_rows()
  		return new