[luatex] robustness of node.traverse

[Taco Hoekwater]

On 11/08/2012 10:47 PM, Stephan Hennig wrote:
> Hi,
>
> the manual is quite terse about node.traverse().

Please check the latest manual commit, I added an explanation
of the internals of node.traverse() and node.traverse_id() that
should make things clearer.

Best wishes,
Taco