1 \ProvidesPackage{mathjax} 2 \newcommand{\jax@auto}{\newcommand{\jax@auto@ok}{}} 3 \newcommand{\jax@std} 4 {\newenvironment{mathjax}{}{}% 5 \newenvironment{displayjax}{\[}{\]}% 6 \newcommand{\textjax}[1]{\(##1\)}} 7 \DeclareOption{auto}{\jax@auto} 8 \ProcessOptions% 9 \@ifundefined{jax@auto@ok}{\jax@std}{}