[packet_nerd]

Type in what? A text editor? Bash? A browser? An app?

I could see myself getting started on a big tangent, and the Interviewer listening politely, then responding with "you're over thinking it; a new line is inserted and the cursor moves to the next line."

[Deinos]

I think I would appreciate the tangent and see where it went, time allowing, as it still offers insight into your thought processes and depth of knowledge. If the tangent goes to far afield, you can always guide it back with additional leading questions...

[williamdclt]

Come on, the question is clearly about a browser

[overcast]

I don't see anything clear about it being a browser. If you want to ask silly questions like this, expect silly responses. There is a zillion ways to answer this question, I imagine the idea here is just to see a persons thought process, and not being 100% accurate.