Size matters?

Now that I've got your attention - advertising for a CD special with disclaimer info below - are their font size requirements, and if so, where do I find the cite? I haven't found anything in Reg DD, yet......

Just the old caveat of "clear and conspicuous".

Thanks, I looked through Reg DD as carefully as I could and didn't see anything - it's on of those things where you could swear you heard something about it, but you're not sure - maybe it's a lending advertising thing, I don't know - thanks rl.