Distributed edge source terms (force terms per unit length in 2D or per unit area in 3D). These distributed terms are translated into equivalent nodal force terms on the edges of elements. This option is meant for 2D and 3D calculations. You should specify a force term for each principal unknown which is present in the calculation (see the start of the data part description for a list of principal unknowns). Also the record force_element_edge_geometry should be specified, and optionally the records force_element_edge_factor and force_element_edge_time can be specified.