Thanks for your work,In  online demo,It works well.Waiting for the change 
in pandoc.

在2023年9月14日星期四 UTC+8 12:39:18<John MacFarlane> 写道：

> I have released a new version of texmath that fixes this issue.
>
> > On Sep 13, 2023, at 5:07 PM, Yibotg <yib...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> > 
> > I have updated pandoc to version 3.1.8, and there is still a square to 
> the right of the root symbol.In slides.xml, the value of m:val="1".If I 
> change "1" to "on",the display becomes correct.
> > I tested the online texmath(texmath demo (johnmacfarlane.net)), the 
> $\sqrt{x}$ is converted to m:val="1"，which causes display errors(a square 
> to the right of the root symbol) in PowerPoint.
> > m:val="1" m:val="on"
> > PowerPoint Wrong Correct
> > Word Correct Correct
> > 
> > 在2023年9月14日星期四 UTC+8 03:39:13<John MacFarlane> 写道：
> > I've lost track of what you think is wrong in pandoc.
> > 
> > I had understood you to be using pandoc to produce a docx. In that case, 
> there should be no problem, because recent versions of pandoc will generate 
> m:val="on", not m:val="1".
> > 
> > If you're instead reading docx, then maybe your point is different, that 
> pandoc should accept both "1" and "on" as on values?
> > 
> > 
> >> On Sep 12, 2023, at 7:34 AM, Yibotg <yib...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> >> 
> >> I think the opposite of 'm:val="on" ' is 'm:val="off" ', Powerpoint 
> read 'm:val="1"' not as 'm:val="on"' but as 'not on' . Howerver Word Can 
> read 'm:val="1"' as 'm:val="on"'.
> >> 
> >> 在2023年9月12日星期二 UTC+8 09:51:19<Yibotg> 写道：
> >> Sorry John, the first post is right.
> >> <m:degHide m:val="on" /> leads the correct root sign 
> >> and 
> >> <m:degHide m:val="1" /> leads a blank square on the left of root sign.
> >> however in docx，<m:degHide m:val="1" /> leads the correct root sign.
> >> 
> >> I am sorry for my mistake.
> >> 在2023年9月12日星期二 UTC+8 02:38:16<John MacFarlane> 写道：
> >> 
> >>> On Sep 11, 2023, at 5:26 AM, Yibotg <yib...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> >>> 
> >>> Sorry , I made a mistake.
> >>> <m:degHide m:val="1" /> leads the correct root sign
> >>> and
> >>> <m:degHide m:val="on" /> leads a blank square on the left of root sign.
> >> 
> >> Well that's good, because pandoc produces m:val="1".
> >> Perhaps you have an old version?
> >> 
> >> 
> >> 
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