Comment by dobin

I also having a side project optimizing draw calls to french Minitel terminal. Instead of letting the generator create their own draw calls, just let them print in a buffer/array.

Drawing the array means finding out what changed, and then create optimized draw sequences: Like using delete-till-end-of-line, vertical cursor moves, or repeat-character-x. Very noticable on 1200/4800 baud.