Yes, this is probably the most sensible approach. Other options would be to ignore everything you don't recognize or ignore all nodes of the form: unrecogni

Yes, this is probably the most sensible approach. Other options would be to ignore everything you don't recognize or ignore all nodes of the form: unrecognized tag [value] i.e. where you don't recognize the key and the value is not complex. You could still display stuff like: unrecognized tag [ [text] ... ] i.e. text nodes which are children of unrecognized elements. But approaches like these would need a good justification.