Hi all, I'm trying to use a Survex centre line on Therion but I don't know how to start. Do I have to use the .SVX or the .3D? Could anybody help me with the first steps, please? Thanks! -Toni This communication and any files or attachments transmitted with it may contain information that is copyrighted or confidential and exempt from disclosure under applicable law. It is intended solely for the use of the individual or the entity to which it is addressed. If you are not the intended recipient, you are hereby notified that any use, dissemination, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify us at once so that we may take the appropriate action and avoid troubling you further. Thank you for your cooperation. Please contact your local IT staff or email info@wacker.com if you need assistance.