\documentclass{article} \usepackage{amsmath} \input AmsTeX4ht.sty \Preamble{html} \ConfigureEnv{equation} {\HCode{
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}}{}{} \begin{document} \EndPreamble \begin{equation}Psalms _ {131:1} \end{equation} My heart is not haughty, nor mine eyes lofty: neither do I exercise myself in great matters, or in things too high for me. \end{document}