This sample demonstrates the import of a bounding mesh in OBJ file format.
It uses the MATERIALS section to tie the name stated
in the OBJ file to FlexPDE properties.
The OBJ file contains :
one object named 'arrow' that will be bound to a material property set.
title 'Import OBJ Arrow'
materials 'arrow' : k=1
boundaries import OBJ 'arrow.obj'