VIDEO_MEMORY_POS
draw_pos = VIDEO_MEMORY_POS(scp, from, 8 * pixel_size);
draw_pos = VIDEO_MEMORY_POS(scp, from, 8);
d = VIDEO_MEMORY_POS(scp, from, 1);
draw_pos = VIDEO_MEMORY_POS(scp, at, scp->font_width * pixel_size) +
draw_pos = VIDEO_MEMORY_POS(scp, at, 8) +
d = VIDEO_MEMORY_POS(scp, at, 1) +