@neauoire This is so cool!! I haven't been exposed to ASCII-encoded pictures before, so this is such a fun mind-bend for me! I think that your GLY spec is very neat and clever.

I read through the doc and you say there's an escape code at the beginning of each line for the GLY encoding. I'm curious: what escape code are you using there? Is it just a genuine escape character code, 0x1B, or is it something else? Am I understanding the encoding correctly?