DATR offers the possibility of defining "evaluable paths". These have the following form (where N ≥ 1): (7) Node1: 〈PathX〉 == 〈"〈Path1〉"..."〈PathN〉"〉. This equation can be used to create a path by evaluating separately the paths from "〈Path1〉" to "〈PathN〉" and concateneting the result values. - Corbett & Fraser (2004), a pag.375