Managed to score a lot of points once by having a columnar display collapse itself with smooth scroll to make space for additional info beneath it (define a scr

Managed to score a lot of points once by having a columnar display collapse itself with smooth scroll to make space for additional info beneath it (define a scroll region over the centre part of the display, cursor position to the bottom and print more stuff - with line drawing chars forming a grid the effect was very effective). Smooth scroll is actually quite easy in hardware, as it's just a case of changing the scan line offset by 1 each frame. A small handful of TTL chips will do it, later a small tweak to the CRT controller, and nowadays about a bazillion CPU cycles to do it in software.