I set up an application which imports IGES files. When I check the shapes imported (faces) from a sample file, most of them are invalid. The only valid ones are those representing planar or spherical faces. This IGES file seems to be of poor quality, so some healing could probably help. I tried to figure out how the ShapeFix package works but couldn't find any documentation on it. Also browsing the source didn't help me much as I don't know in which sequence the methods have to be invoked and what parameters should be chosen. Could anybody help me, please?