Aha, I've found a fix, referenced at: 
https://stackoverflow.com/questions/48083724/pandoc-markdown-ignore-text-in-pdf-but-include-in-html-updated

Here is what I put, and the epub ignores the latex content and the latex 
ignores the epub (html) content. Magical indeed.

`<p class="dinkus">&midast; &midast; &midast;</p>`{=html}
> \begin{center} ∗ ∗ ∗ \end{center}


Thanks for your help. Your suggestions are very useful. 
--Jeff Mcneill


On Saturday, October 26, 2019 at 2:24:17 PM UTC+7, Václav Haisman wrote:

> On 26. 10. 19 9:09, Jeff Mcneill wrote:
>
> I suggest you add the following to your LaTeX preamble:
>>
>> \usepackage{newunicodechar}
>> \newunicodechar{∗}{\textasteriskcentered}
>>
>> and then use the raw character in your document
>>
>> \begin{center}
>> ∗ ∗ ∗
>> \end{center}
>>
>> ​
>>
>>
>> -- 
>> VH
>>
>>
> This indeed fixes my issue with latex in terms of producing the correct 
> dinkus display (&midast;) when md->pdf, however this still is discarded by 
> pandoc when producing an md->epub. The lines are simply removed (there is 
> no dinkus and no additional space added between the separated sections). -- 
>
>
> You will have to write a filter that will implement the dingus differently 
> for each output format. Pandoc is not magical, it cannot translate 
> everything.
>
> One more comment about the LaTeX dingus: I have found one more 
> sophisticated implementation, see 
> https://tex.stackexchange.com/a/101240/28495.
> ​
>
>
>
> -- 
> VH
>
>

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