location == ESTRY Control File (.ecf)

command == Read GIS Network

description == Used to define grouped structure locations and attributes. For example, weirs representing overtopping of a bridge or culvert structure can be specified using a single GIS feature in the 1d_nwke file. By comparison, multiple line features would be required if the same input was defined in a 1d_nwk file.

wiki link == https://wiki.tuflow.com/TUFLOW_Empty_Files#ESTRY_Control_file_.28ECF.29

manual link == https://docs.tuflow.com/classic-hpc/manual/2025.0/OneD-Domains-1.html#Auto-Weir-4