Rowan Sweater pattern, Orkney, in Rowan knitting mag. #52, pgs. 154-159

In this pattern I am working the left front and am at the Shape Armhole part (mid. col.) It states:
"Keeping patt correct, cast off 7 sts at beg of next row, leaving 65 sts.
Work 1 row.
My question is: Is the casting off 7 sts one row, ie the knit row, and then the next direction “Work 1 row” is another row, the purl row.
Or, do they mean “cast off 7 sts at beg of next row” and "work 1 row are the same row?
confused!
Sue
Rowan Knitting and Crochet Magazine No. 52, page 155, working left front of the Orkney Sweater by Marie Wallin, middle column under Shape armhole

Cast off 7sts at the beginning of the row and then continue to the end of the row.
Work one more row.
So there are 2 rows here, a right side row (knit row) and a wrong side row (purl row).