Sorry for the probable trivial question, I'm an occasional user. I'd just like to know if the following behaviour is normal: (%i1) a[2]:45; (%o1) 45 (%i2) a; (%o2) a (%i3) a:[1,2,3]; (%o3) [1, 2, 3] (%i4) a[2]; (%o4) 45 (%i5) a[1]; (%o5) a 1 I was expecting something different at least in the 5th output, if not in the 4th...