<figure xmlns="http://www.tei-c.org/ns/1.0"> <graphic url="BRUDER_Daniel_Datenmodelle_zur_digitalen_Texterfassung__Comp-100002010000048C000000D02F5C458C.png" /> </figure> <p xmlns="http://www.tei-c.org/ns/1.0">Constraining these combinatorial permutations cannot be done in general ways within the mono-hierarchical tree data model. The tree model exposes a general limitation – even without the prevalence of overlapping structures.</p>