Re. naming things, In the original BASIC, variable names were also quite limited. A-Z, A[0-9]-Z[0-9], which is actually an even more limited space than most spr

Re. naming things, In the original BASIC, variable names were also quite limited. A-Z, A[0-9]-Z[0-9], which is actually an even more limited space than most spreadsheets which allow for something like [A-Z]{1,4},[0-9]{1,4} at least. You could also argue that spreadsheets are kind of homoiconic, since code and data occupy the same structure. But that's a bit of a stretch.