Yeah, but how do they get the scores to run across the bottom of the screen?

Today's Buffalo News ran an interesting article, believe it or not, on the technical challenges posed to the TV people in superimposing the yellow first-down line on the screen during football games. Unfortunately, I can't for the life of me find that article on the News's website (maybe it's not even there, given that it didn't originate with them), so here's a page that details the process. Cool!