if I have 10 temperatures to display I can do one per line on a 10x4 display (assume a 2.1 layout) using all 40 positions with info
on a 4x10 display I need at least separators between the temp, so I can only display 8 values
instead of 10 temperature it can also be other weather data, or other counters in the range -999..9999 or equiv. (lap counters?)