It means that the last row you work is a purl row.
If there's ever any doubt, check the instructions for the next row to see if it's a right side or wrong side row.
"Trust the pattern!"
Time flies like an arrow, but fruit flies like a banana.
Hop aboard while we follow the cloud-covered van of knitting harmony, man!! Woooo!! --Hedgehog
IngridKH on Ravelry