1st Point: gives the X, Y coordinates of
the origin relative to the current benchmark.
2nd Point: gives the X, Y coordinates of
the second anchor relative to the current benchmark.
3rd Point: gives the X, Y coordinates of
the final anchor relative to the current benchmark.
Edge Color: determines the color of
the dashed line that represents the Roof Plane.
Roof Plane .jpg){kind=small}
.gif){kind=small}
