location == Estry Control File (.ecf)

command == Read GIS Network

description == Used to define channel and node locations and attributes. Common channel types include, open channels, culverts, bridges, weirs. The difference between the 1d_nwkb and standard 1d_nwk is that the pblockage attribute field accepts characters allowing the user to input matrix blockage.

wiki link == https://wiki.tuflow.com/index.php?title=TUFLOW_Empty_Files#ESTRY_Control_file_.28ECF.29

manual link == https://downloads.tuflow.com/_archive/TUFLOW/Releases/2018-03/TUFLOW%20Manual.2018-03.pdf
manual page == 97