听力原文：W: What's the problem? M: I can't figure out how to put the page numbers on. I've done everything and they aren't showing up. W: Let's see. Did you press Shift, F8 ? M: Yes, I did that.~ Then I hit P for page and N for number. W: That's good. Did you type in the page number where you want the numbering to start? M: Yes. I typed the number 1. W: Right. Did you press Enter? M: Yes. W: How about F7 to return to the document? M: I did that. But no numbers showed up on the screen, W: Unhuh, Did you print it? M: No, I don't want to print it until I see the numbers. W: Well, that's the problem then. The numbers don't show up the screen. But they will on the printed copy. Let's try that. M: Okay. You do it this time, and I'll watch. W: Well, I'll do it as you want, but it would be better if you let me talk you through it. M: I don't know. W: Really. Once you've done it with someone coaching you, it's easier to do it on your own. Don't worry. This is my job. M: Oh, all right. Shift FS. W: Now hit P for page and N for number. M: And the page number I want to start with which is number 1. W: Great! Just press Enter, then F7 to return to the document, and you're all set to print. Then you'll see those numbers. What prompted this conversation?