On Mar 20, 2017, at 03:01 PM, Footleg via Therion <therion@speleo.sk> wrote:
Martin, I am not sure what -flip right, left in centreline is about. I cannot find any reference to using flip in centrelines in the Therion book. But the -flip horizontal scrap option which both of you pointed me to did the trick.

As always, typo in my head: extend left, right, ...

m.