Document Classes ⇒ Sub-subsections in Presentations

[marie2011]

Dear forum members,

I was wondering if you know why I am having problems with slides 6 and 8. All elements, apart from the relevant ones, should be "under a shadow", but they are not. I was wondering if beamer does not allow to have "subsubsections".

This is a minimal working example:

Code: Select all

\documentclass[10pt]{beamer}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage[spanish,ngerman,catalan,english]{babel}
\usepackage{pdfpages}
\usepackage{graphicx}

\usefonttheme[stillsansserifsmall]{serif}
\usefonttheme{structuresmallcapsserif}
\usetheme{Pittsburgh}
\usecolortheme{seahorse}

\setbeamertemplate{footline}[frame number]
\beamertemplatenavigationsymbolsempty

\title{}
\author{}
\date{}

\begin{document}
\selectlanguage{spanish}

\begin{frame}
  \titlepage
\end{frame}

\begin{frame}
  \frametitle{{\'I}ndice}
   \tableofcontents
\end{frame}
\frame{
  \frametitle{{\'I}ndice}
  \tableofcontents[pausesections]
}
\section{Introduction}
\subsection{Introduction}
\begin{frame}{Introduction}
\end{frame}
\subsection{Aim}
\begin{frame}{Aim}
\end{frame}
\section{Marco}
\begin{frame}
\frametitle{{\'I}ndice}
\tableofcontents[current]
\end{frame}
\subsection{A}
\begin{frame}
\end{frame}
\section{Metodolog{\'i}a}
\begin{frame}
\frametitle{{\'I}ndice}
\tableofcontents[current]
\end{frame}
\subsection{Descripción}
\subsubsection{Sesión}
\begin{frame}{Sesión}
\textbf{Primera Parte:}
\end{frame}
\subsubsection{Directrices}
\begin{frame}{}
\begin{enumerate}
\item<2-| alert@2>  P
\item<3-| alert@3> U
\end{enumerate}
\end{frame}
\end{document}

Many thanks in advance.

Best regards,

Marie