halt (stop execution) after obtaining a message of \texttt{HaltLevel}.
Possible values match \texttt{DisplayLevel} values.
\item
\DIFaddbegin\emph{\DIFadd{Note 1}}\DIFadd{: A halt will only occur if bit }\texttt{\DIFadd{0}}\DIFadd{(i.e. enable logging) for }\texttt{\DIFadd{Target}}