labelings:
\begin{lyxlist}{00.00.0000}
\item [label~1] first item
\item [label~2] second item
\item [{$\left[\textrm{ }\right]^{x}$}] Label with space, math and ] in it
\end{lyxlist}
labelings:
\begin{lyxlist}{00.00.0000}
\item [label~1] first item
\item [label~2] second item
\item [{$\left[\textrm{ }\right]^{x}$}] Label with space, math and ] in it
\end{lyxlist}