How do I delete the name of the program that I added on my TI-84 Plus Calculator?

I just bought myself a TI-84 Calculator the other day, and I was messing with it, but I went to the on that says PRGM and added a name (just curiousity), and also, I did added a couple of names and words in there, but the question now becomes: how do I delete that name or words that I put wrote down on the program screen. I have tried to mess with it to try to delete those entries, but I am not sure of how to delete it. Can anyone please help me?