where the X and Y are either slight italics or underlined or colored You might find this interesting if you're thinking along those lines: http://joshondesign.

where the X and Y are either slight italics or underlined or colored You might find this interesting if you're thinking along those lines: http://joshondesign.com/2014/08/22/typopl http://joshondesign.com/2014/08/22/typopl