We have a new pre-owned copy machine at school. It has lots of bells and whistles. On the finisher end of the machine, there are a pair of buttons that are a mystery to me. I can’t figure out what they do.
They appear to make curvy pages flat. It seems you can either choose to correct pages that curve down or pages that curve up. There also seems to be an “automatic” function that corrects both directions of curving.