What does it mean when they make a "copy" at a pharmacy?

I always hear the clerks yell out, "I have a copy on line 2!" What is it that they are "copying?"
Answers:
actually, it means another pharmacy is calling to transfer the refills of a prescription to their pharmacy. Some people call it a "transfer" others call it a "copy"

---

It means the chemist is playing with the photocopier again.

---

I think it means a doctors office.

---