x} \) </li>
<li>NotMathMLToken: \( \mmlToken{INVALID}{x} \)</li>
<li>InvalidMathMLAttr: \( \mmlToken{mi}[_INVALID_]{x} \)</li>
<li>UnknownAttrForElement: \( \mmlToken{mi}[INVALIDATTR='']{x} \)</li>
<li>MaxMacroSub1: \( \newcommand{\a}{\a} \a \)</li>
<li>MaxMacroSub2: \( \newenvironment{a}{\begin{a}}{\end{a}} \begin{a}\end{a} \)</li>
<li>MissingArgFor: \( \frac{a} \)</li>
<li>ExtraAlignTab: \( \cases{a & b & c} \)</li>
<li>BracketMustBeDimension: \(\begin{array} x \\[INVALID] y \end{array}\)</li>
<li>Invalid