# \newcommand in the MediaWiki Math extension

When using the MediaWiki MathJax extension, it's trivial to create new commands with \newcommand. From the MathJax documentation:


LaTeX command implementation in MathJax is somewhat limited, so I am also evaluating the MediaWiki Math extension. The \newcommand syntax doesn't appear to work here, and I get a failed to parse unknown function error.

Is it possible to define new macros in the MediaWiki Math extension? If so, how?