Re-recording a section of copy at a certain point. 90% of your read may be a in the can, but there may be a phrase, sentence or paragraph that the director feels could be done a bit better, clearer, faster, slower, etc. The director tells you exactly where they want you to pick-up your line(s)where to start from and where to end at. Read a sentence or phrase before the pick-up starting point, as well as the ending point. This is done to help the engineer better edit the pick-up, matching phrasing and levels.