question: NodeIterator in DOM

[Akitoshi Yoshida]

Hi,
I have a question on NodeIterator in DOM-19980416.

Excerpt from the spec:

  If a node is inserted before the node just after
  the iterator position, it will be returned by getNextNode();
  likewise if a node is inserted after the node just previous
  to the iterator position, it will be return by the next
  getPrevNode() call.

The first part is clear. When a Node is inserted by insertBefore()
at the node just before the iterator position, the iterator position
is set in front of this new node. The second part
starting "likewise.." is not clear to me.  Are we assuming the
existance of the insertAfter() method? It sounds like the
insertion position (relative to the nodes) is the same as
in the first case. If we only have the
insertBefore() method in the Node inteface,
how can we distinguish the above two cases?

thanks in advance for any clarification

aki

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