7. The computer-implemented method as recited in claim 1 , wherein the set of marker texts comprises a first set of marker texts and a second set of marker texts, the method further comprising: storing metadata that indicates that the first set of marker texts have a first logical significance and that the at least second set of marker texts have at least a second logical significance.
7. The computer-implemented method as recited in claim 1 , wherein the set of marker texts comprises a first set of marker texts and a second set of marker texts, the method further comprising: storing metadata that indicates that the first set of marker texts have a first logical significance and that the at least second set of marker texts have at least a second logical significance. 8. The computer-implemented method as recited in claim 7 , wherein the plurality of marker texts comprises one or more marker texts belonging to the first set of marker texts.