% Exercises (old format)
\font\manual=manfnt
\def\ejercicio#1#2{\medbreak\noindent\llap{\manual\char'170\rm\kern.15em}{\bf\small EJERCICIO #1}\\#2\par\nobreak\noindent}
\def\exercise{\ejercicio}
\def\cuestion#1#2{\vspace{.35in}\medbreak\noindent\llap{\manual\char'170\rm\kern.15em}{\bf\small CUESTI\'ON #1}\\#2\par\nobreak\noindent}

% Notices
\def\sremember#1{\begin{center}\begin{tabular}{|p{0.9\textwidth}|}\multicolumn{1}{p{0.9\textwidth}}{{\kern-.3em\small {[}#1{]}}}\tabularnewline\hline\kern-1ex}
\def\eremember{\tabularnewline\hline\end{tabular}\par\end{center}\vspace{.3em}}