Good BUT still need MORE

This productivity software works perfect and Ive finished a lot of academic writing with it.
However, as the ECON grad student, we are dealing with a mess of mathematical and statistical symbols / functions day by day.
So really in need of support on symbols like β_hat, x_bar, or just recognize some kind of syntax when previewing and converting to Word.
The bigger issue is the superscript and subscript. Actually occasionally, I found out we can use caret ^ to make superscript (BUT this doesnt mentioned on the online support website). But for the SUBSCRIPT, there is no solution of it yet (or iA just forgot to mention it). As I was aware, subscript can be reached by using underscore _ in some software, but...it seems to be occupied by italics in iA...BUT since * * is also a syntax to make italics, it makes no sense we have two same syntax for one thing!!! What about just make it common, to use underscore for subscript.
Otherwise, since iA is using Unicode, why just create a syntax just enable us to put the Unicode directly.
REALLY REALLY looking forward to the updates, especially for the SUBSCRIPT.

KKKKen K about iA Writer