IGES (*.igs, *.iges) formats

The IGES export dialog is similar to the dialog for STEP, JT, ACIS and PRC formats, but two additional parameters are available for the IGES format.

Using NURBS. Setting this flag allows use of rational splines (NURBS) when converting a model. If the flag is cleared, all exported geometry is described solely by polynomial splines.

Save Bodies as Sets of Faces. Instead of preserving a solid body, a set of its faces will be preserved, each face as a separate surface.