Hi Pilou,

re:
> you can modify the Acis libraries or they are "closed" ?

I don't have the source code for the libraries so I need to ask the ACIS developers (a company called Spatial) to make modifications, I am not able to do it myself.


> When you say replaced 2 Planes, what is exactly this ? (faces ? ...

I replaced 2 planar faces.

- Michael