Env: \( \begin{_INVALID_} \end{_INVALID_} \)</li>
<li>UnknownEnv: \( \begin{UNKNOWN} \end{UNKNOWN} \) </li>
<li>ExtraCloseLooking: \( \sqrt[}]x \)</li>
<li>MissingCloseBracket: \( \sqrt[ \)</li>
<li>MissingOrUnrecognizedDelim: \( \left \)</li>
<li>MissingDimOrUnits: \( x \above y \)</li>
<li>TokenNotFoundForCommand: \( \root{x} \)</li>
<li>MathNotTerminated: \( \text{$x} \)</li>
<li>IllegalMacroParam: \( \def\mymacro#1{#2} \mymacro{x} \) </li>
<li>MaxBufferSize: \( \newcommand{\a}{\a\a} \a \)
</li>
</ul>
</