I mean for the T-shirt, which is not your typical development environment. Then again, the little tag that has laundry instructions should also have compilation instructions, right?

Probably do it in PhotoShop with each piece being a separate layer. A vector drawing program is better, but PS is what I've got and what I'm good at.

FWIW, the editor I use does change fonts and sizes all over the place, based on syntax.

—John