--- GENERATOR: 'Mozilla/4.05C-SGI [en] (X11; I; IRIX64 6.5 IP28) [Netscape]' --- "30" "30"](mstkla.md#MODEL%20FACE:) "30" "30"](GeomRegion.md) "30" "30"](GeomEdge.md) "169" "131" ------------------------------------------------------------------------ ------------------------------------------------------------------------    **MODEL FACE OPERATORS:** ------------------------------------------------------------------------  *void* **GF\_Regions**(*PGeomFace* gf, *PGeomRegn* gr[2]); Get the regions on either side of the face. gr[0] is the region on the opposite side of the normal while gr[1] is the region on the same side of the normal.  In principle (not in LaGriT), both entries of gr may be filled \_AND\_ gr[0] may be equal to gr[1]. Also in principle, both entries of gr may be NULL.     "30" "30"](mstkla.md#MODEL%20REGION:) "30" "30"](GeomRegion.md) "30" "30"](GeomEdge.md)