odd message.. no body.. first generation displays were very dumb, later generations were intelligent and could parse the data stream allowing the creation of multiple virtual displays along with graphics. these are the ones with a 25th status row
Ken just wrote a blog post about this trying to defuse the nonsense on the web about the reason why terminals are 80 x 25 https://twitter.com/kenshirriff/status/1192497422959665153