Sewing cuff seams toward outside

#1

I have a sweater pattern that was translated from German. The finishing instructions say join sleeve seams, thereby sew together 8cm (approx. 3.1") of sleeve cuffs at lower end towards outside. I don’t know what this means. Is the lower part of cuff left open with the open seam edge finished somehow?

#2

It sounds like the lower part of the sleeve is supposed to be turned back in the finished sweater to make a cuff. In order to seam it so the seam won’t show when you turn back the cuff, you seam the lower ~3" to the outside, then continue the seam up the sleeve on the inside of the sleeve.
You could seam the entire sleeve on the inside, but then you would have a seam showing when you turn back the cuff.