Editing the Prescription

The patient shook his doctor's hand in gratitude and said:

- Since we are the best of friends, I would not want to insult you by offering payment. But I would like for you to know that I had mentioned you in my will.

- That is very kind of you - said the doctor emotionally, and then added:

- Can I see that prescription I just gave you? I'd like to make a little change...