Memory usage by script vars

[nanakiwurtz]

I'd like ask how many bytes (or kb) of the memory does it take to assign a value into a var.

Because when I read and study lots of script writer tend to use (even abuse) the var assigning.

is it different between .var and .var$, or: 

set .var1, 1;
set .var2, 1;
set .var3, 1;
set .var4, 111;
setarray .var5[0],1,1,1;
setarray .var6[0],111;

I admit that abusing the vars is fun and makes life easier, but I think it's not memory wise (But I can be wrong )

 

Thanks for any insights