viewing changing amounts

6.11: adde/mem display:

. the system should be showing

how much mem it's using;

but, if the mem is changing rapidly,

then then display will be unreadable:

in that case,

the minimal display has both the amount,

and the rate of change;

so, then if you see the rate of change

is non-zero

then you know the amount will change soon,

it is only frozen temporarily for readability .