I have the opportunity to buy a used Summa S160 D-series and would like to know if it reads OPOS marks or is there also models that don't have the reader for the marks from this series cutters? The company selling it doesn't deal with these machines and doesn't know anything about it. It's a bit away from me so I would like to know if all S160 D-series has optical eye for reading marks? I am not that familiar with Summa cutters so... Thanx a lot!