I just had a client call me and ask how to enter a lower-case number 1.

When I asked her for clarification (to make sure she really did ask that), she explained that she wanted to use a lower-case number 1 and that she's done it before. BTW....it's proprietary software, no subsets allowed. So, I had to inform her that it is not possible at which point she told me that I didn't know what I was talking about and hung up on me.