location == Geometry Control File (.tgc)

command == Read GIS FLC

description == Used to apply an additional energy loss at the 2D cell side. The form or energy loss can be applied as fixed values or on a form loss per unit length basis.

wiki link == https://wiki.tuflow.com/TUFLOW_Empty_Files#TUFLOW_Geometry_Control_file_.28TGC.29

manual link == https://docs.tuflow.com/classic-hpc/manual/2026.0/TwoD-Domains-1.html#flc-4