> While this works for the first level, it does not for the seccond, or
> how would you represent my full example above:
> 
> <row folder1="ROOT" folder2="f1"/>
> <row folder1="f1"   folder2="f2"/>
> <row folder1="f2"   folder2="f3"/>
> <row folder1="f3"   folder2="f4"/>
> <row folder1="ROOT" folder2="f2"/>
> <row folder1="f2"   folder2="f4"/>
> 
> could also describe:
> 
> /
> +- f1
> |  `- f2
> |     +- f3
> |     |  `- f4
> |     `- f4      
> `- f2
> 

No, not if there's the convention that the order of "row" elements is according to a
depth-first traversal.

In this case your last example will be represented as:
 <row folder1="ROOT" folder2="f1"/>
 <row folder1="f1"   folder2="f2"/>
 <row folder1="f2"   folder2="f3"/>
 <row folder1="f3"   folder2="f4"/>
 <row folder1="f2"   folder2="f4"/>
 <row folder1="ROOT" folder2="f2"/>

I agree that this is getting off-topic.

Cheers,
Dimitre Novatchev.


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