Thanks. Ok you are going to add a vertical mode .
Yes, the original versions of these programs should not be obvious to use on the original C64. But it's true that I would have liked some kind of OS to be able to create things on the machine to be able to use it for something other than playing on it because I find the hardware very pleasant to use... that's what it is Apparently the Commodore 128 was more pleasant to use for coding games, it would have been good with current knowledge to create a sort of cartridge interface on the c64 for use in creation, images, video games (with c64 basic code editor), sprites, music...