In creating a Rmd file I included an internal hyperlink: 

   [hlink](#id1)

and then further on an anchor 

<a id="id1"></a> .

When I then use Knit HTML (in RStudio) everything works fine and the internal hyperlink works fine but I also get an unwanted � 

<p><a id="id1"></a>�</p>

How can I avoid getting this error?

r knitr
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