Calculates area properties of any 2D drawing. Software processes native
lines, arcs, and circles. Polylines and lightweight polylines must first be
exploded. Holes are taken into account. Requires AutoLisp for interfacing
to the host application. Calculated values include area, centroid, moments
of inertia, section modulus, radius of gyration, and others. Results may be
imported back into the drawing. Price is $99.00.