It's rendered by your program/game.
Basically what that rule boils down to is on a webpage one could have their 64x64 game in a frame and do anything else on the page. So you can only replicate that within reason if it's more convenient to do it another way (especially if not actually on the web).
But remember, other people rating your game may see it as using more than your resolutions worth, and give a lower rating in Authenticity.