I'm not exactly sure how to call it, so I've had a hard time search for it online.
What I have is a solid block of text.
What I want is to change the formatting of part of this block of text (make it bold, italic, change its color) according to a shape or picture.
I'm already using pstricks for all my other figures so I'd rather stick to that if at all possible. I have a picture (png) with the shape I'm trying to imprint, but I could recreate it in pstricks if it's necessary.