int setvertexpoint(int geohandle, int prim, int vtxofprim, int pt)
Rewires a specified vertex to a point number.
If the point number is -1, no rewiring is done.
If prim is -1,
vtxofprim is treated as a linear index, and vice versa. Otherwise, the pair (
vtxofprim) is used to identify a vertex in a primitive’s vertex list.
This function is a new name for the equivalent function setprimvertex, added for clarity.