Admittedly, I'm assuming that we can use some typesetting back end; i.e., for instance, we don't have the requirement to generate a typesetter-ready image (or PDF document) without any third-party code; we don't have to do our own font rendering and kerning, etc. Also, I'm assuming we don't have to burn cycles Greenspunning up half of Lisp in some dumb langauge.