Dear Francis,
these are the common issues that I mentioned in one of my previous
e-mails. TeX4ht doesn't support \mathbf{xxx}^x. Valid input is
{\mathbf{xxx}}^x. The {}_x issue is something different, this is really
known bug that I don't know how to fix.
Here are some other known issues: h
Attached is a MWE illustrating the MathML generation errors that I detected
originally when using make4ht with mjcli. They appear to fall into two classes:
text in a different font with a super- or sub-script; use of {} with a super-
or sub-script. Please see also the comments at the end of the
