I bought a nice little app for MacOS called MoleculeSketch; It lets you sketch molecular structures. So I'm wondering how might that code work generally? I would have some kind of premade background (an image maybe?) then another image of the letter 'C' which overlaps it? Is that how it might work? I just want a general idea, I know you guys don't know the code there and I doubt the author would be willing to share.