Which date belongs to which part?

A fictional cover contains three reused documents. Change their dates and compare the boundary with a later repair date. CE dates only; this is a logical model, not Nag Hammadi data.

Reused document A Reused document B Reused document C Documented later repair

What about the text’s composition date?

These inputs alone do not establish it. A work can be composed before its surviving copy, and a cover can be later than the text block. The model assumes the dated reused documents are original constituents of this cover and the repair genuinely postdates it.