Selects the area for which the **force_element_edge** record with
the same *index* should be applied.
In stead of specifying node numbers also,
by example, **-geometry_line 1** can be
used in 2D, indicating that the nodes on line 1 get the distributed force.

__Attention__: if this **force_element_edge_geometry** option is used INSIDE
a FE mesh, then the elements on each side of the geometry will get the force.
So you may need to specify only half of the physical force value.

tochnog 2001-09-02