One more thing:
These files contain multiple surfaces. Just like other isosurfaces, you can select one of them out:
isosurface OBJ "sample.obj" 3
In this case, though, if you leave the number out, you get all of them.
Robert M. Hanson
Professor of Chemistry
St. Olaf College
1520 St. Olaf Ave.
Northfield, MN 55057
If nature does not answer first what we want,
it is better to take what answer we get.
-- Josiah Willard Gibbs, Lecture XXX, Monday, February 5, 1900