%% %% An UIT Edition example %% %% 1st edition %% %% Example 01-01-4 on page 7. %% %% Copyright (C) 2012 Herbert Voss %% %% It may be distributed and/or modified under the conditions %% of the LaTeX Project Public License, either version 1.3 %% of this license or (at your option) any later version. %% %% See http://www.latex-project.org/lppl.txt for details. %% %% %% ==== % Show page(s) 1,5,12 %% %% \documentclass[landscape]{exafoils} \pagestyle{empty} \usepackage[utf8]{inputenc} \usepackage[scaled]{helvet} %\StartShownPreambleCommands \documentclass[landscape]{foils} \usepackage{fixseminar,amsmath,url} \usepackage[display]{texpower} %\StopShownPreambleCommands \begin{document} \title{The \texttt{texpower} / {\normalfont \texttt{foils} demonstration}} \author{Herbert Voß\\\url{mailto:herbert@dante.de}} \maketitle \foilhead{A list environment} \pause \stepwise{ \begin{description} \item[foo.] \step{bar.} \step{\item[baz.]} \step{foobar.} \end{description}} \foilhead{An aligned equation}\pause \parstepwise{ \begin{align} \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{align} } \end{document}