\doc{The qed command}
\ref{qed-command}

The \def{qed command} constitutes a claim that all proofs are finished.

\head{2}{\dlink{../symbols/syntax}{Syntax}}
\begin{verbatim}
\sd{qed-command} ::= \f{qed}
\end{verbatim}

\head{2}{Examples}
\begin{verbatim}
qed
\end{verbatim}

\head{2}{Usage} 

The \fq{qed} command checks that the proof stack is empty.  If it is not, LP
prints an error message and halts \dlink{execute}{execution} of all \f{.lp}
files.

\head{2}{See also}

\begin{itemize}
\item \dlink{box}{Box checking}
\end{itemize}