%%
%% This is file `prosperdemo.tex',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% texpower-doc.dtx  (with options: `prosperdemo')
%% 
%% --------------------------------------------------------------
%% TeXPower bundle - dynamic online presentations with LaTeX
%% Copyright (C) 1999-2004 Stephan Lehmke
%% Copyright (C) 2003-2005 Hans Fredrik Nordhaug
%% 
%% This program is free software; you can redistribute it and/or
%% modify it under the terms of the GNU General Public License
%% as published by the Free Software Foundation; either version 2
%% of the License, or (at your option) any later version.
%% 
%% This program is distributed in the hope that it will be useful,
%% but WITHOUT ANY WARRANTY; without even the implied warranty of
%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
%% GNU General Public License for more details.
%% --------------------------------------------------------------
%% 
%% The list of all files belonging to the TeXPower bundle is
%% given in the file `00readme.txt'.
%% 
\ProvidesFile{prosperdemo.tex}%
      [2005/04/07 TeXPower example file]
%
\documentclass[pdf,colorBG,slideColor,whitecross]{prosper}
\usepackage[display,oldfiltering]{texpower}
\begin{document}
\ifpdf
  No way to compile a prosper document with pdftex!
 \else
\stepwise[\boxedsteps]
{%
\begin{slide}{An aligned equation}
  \begin{eqnarray}
    \step{\sum_{i=1}^{n} i} & \step{=} & \restep{1 + 2 + \cdots + (n-1) + n}\\
    %
                     & \step{=} & \restep{1 + n + 2 + (n-1) + \cdots}\\
    %
                     & \step{=} & \restep
                                  {%
                                    \switch
                                    {%
                                      \vphantom{\underbrace{(1 + n) + \cdots + (1 + n)}_{\times\frac{n}{2}}}%
                                      (1 + n) + \cdots + (1 + n)%
                                      }
                                    {\underbrace{(1 + n) + \cdots + (1 + n)}_{\times\frac{n}{2}}}%
                                    }
                                  \\
    %
                     & \step{=} & \restep{\frac{(1 + n)\step{{}\cdot n}}{\restep{2}}}
  \end{eqnarray}
\end{slide}
}
\fi


\end{document}
\endinput
%%
%% End of file `prosperdemo.tex'.
