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</div></div>Please download and unzip:<br>
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  <a href="https://github.com/lualatex/luamplib/releases/download/v2.12.0/luamplib.tds.zip" rel="noreferrer" target="_blank">https://github.com/lualatex/<wbr>luamplib/releases/download/v2.<wbr>12.0/luamplib.tds.zip</a><br>
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Then grab luamplib.{sty,lua} and drop them into current working directory.<br></blockquote><div> <br></div><div>Placing luamplib.{sty,lua} in the current working directory works fine, but I've tried replacing luamplib.{sty,lua} in the TeX Live 2017 directory (so that the feature would be available globally), and it does not seem to impact the output.  Is there an "update" command needed to "refresh" LuaTeX?<br><br></div><div>Troy<br></div></div></div></div>