Display Too Small

[Feloniousmonk]

So in an effort to love all things *band, I downloaded the variants nppangband and oangband. But the games are virtually unplayable because of how very tiny the tiles are. I feel like I'm squinting the entire time. Now I know with the recent release of angband the tiles got much bigger so I suppose I may be spoiled. I realize this is probably a silly question but how do I get the tiles larger?

I'm sure, or rather, I hope there is a way to get around this.