[Tex/LaTex] Display the bullet of \item

#enumeratebeamer

In the following code, at the place of *step 2*, I would like to display exactly enter image description here. Does anyone know how to do it?

\begin{block}{title}
\begin{enumerate}
  \item ... %Step 1
  \item ... %Step 2
  \item ... Go back to *Step 2*
\end{enumerate}
\end{block}

Best Answer

The idea is to use the \label, \ref mechanism, but defining a command to enclose the string produced by \ref inside a shaded ball like those used by beamer:

\documentclass{beamer}
\usetheme{Warsaw}
\usepackage{tikz}

\newcommand\ballref[1]{%
\tikz \node[circle, shade,ball color=structure.fg,inner sep=0pt,%
  text width=8pt,font=\tiny,align=center] {\color{white}\ref{#1}};
}

\begin{document}

\begin{frame}
\begin{enumerate}
  \item ... %Step 1
  \item\label{ite:second} ... %Step 2
  \item ... Go back to Step~\ballref{ite:second}
\end{enumerate}
\end{frame}

\end{document}

enter image description here

Since the french option for babel makes ; an active charcater, extra precuations will have to be taken:

\documentclass{beamer}
\usetheme{Warsaw}
\usepackage[french]{babel}
\usepackage{tikz}

\newcommand\ballref[1]{%
\shorthandoff{;}\tikz \node[circle, shade,ball color=structure.fg,inner sep=0pt,%
  text width=8pt,font=\tiny,align=center] {\color{white}\ref{#1}};
\shorthandon{;}
}

\begin{document}

\begin{frame}
\begin{block}{title}
\begin{enumerate}
  \item ... %Step 1
  \item\label{ite:second} ... %Step 2
  \item ... Go back to Step~\ballref{ite:second}
\end{enumerate}
\end{block}
\end{frame}

\end{document}
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