<div dir="ltr">Apologies, but I forgot to paste my code.  Here it is:<br><br>\documentclass{article}<br>\usepackage{luamplib}<br><br>\mplibtextextlabel{enable}<br>\mplibcodeinherit{enable}<br><br>\begin{document}<br>    \begin{center}<br>        \begin{mplibcode}<br>            picture p;<br>            beginfig(0);<br>                draw (-36,0)--(36,0);<br>                label.bot(textext("Hello"),origin);<br>                p:=currentpicture;<br>            endfig;<br>        \end{mplibcode}<br>    \end{center}<br><br>    \begin{center}<br>        \begin{mplibcode}<br>            beginfig(1);<br>                currentpicture:=p;<br>            endfig;<br>        \end{mplibcode}<br>    \end{center}<br><br>\end{document}<br></div>