yoblanco
yoblanco
Mmm, I'm not sure at all. If, instead of `a` and `b` you use `i` and `j` you don't need to kern the `i` (in fact it looks bad). So...
After a few time, here I'm again. Sorry for the late response. There's no difference rather than `:` and `_` can be included in macro names, that is - `\somemacroname`...
It would be better if it was possible that kind of scoping, so in “normal” text `\sum_a` is `\sum` with a subscript `_a`. And _only_ inside `\ExplSyntaxOn .. \ExplSyntaxOff` that...