Testing subscript and superscript
Testing subscript subscript level 2
Testing superscript superscript level 2
Testing subscript and superscript
Testing subscript subscript level 2
Testing superscript superscript level 2
got it
x2 -> RH2O
O2
text
Testing: CO2 laser
It does work in Typora for me. In 'code' mode type
<sub>hello</sub>