test only

This is only a demonstration of a problem, regarding the resolution, that occurs with a small polygon that is scaled. It's explained in the source.
The discussion can be found in
http://www.thingiverse.com/groups/openscad/topic:7898

The .scad file demonstrates creating a cylinder with polyhedron, linear_extrude/polygon|circle, rotate_extrude/square and linear_extrude/circle.