%%
%% The LaTeX Companion, 3ed
%%
%% Example 8-4-22 on page I-625 in "Formatting and text changes based on verso/recto pages".
%%
%% Copyright (C) 2022 Frank Mittelbach
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3c
%% of this license or (at your option) any later version.
%%
%% See
https://www.latex-project.org/lppl.txt for details.
%%
\documentclass{tlc3exa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{81.00082pt}
\pagestyle{origplain} %plain in this class
\setlength\footskip{20pt}
\setlength\textheight{10\baselineskip}
\tolerance=4000
% manually adjust size as example is set in small type
\renewcommand\thepage{{\footnotesize\arabic{page}}}
%StartShownPreambleCommands
\usepackage{kantlipsum,tcolorbox}
\tcbuselibrary{skins}
\newtcolorbox{exa}[1]{beamer,bottom=0mm,title=#1,%
if odd page={attach boxed title to top right
={xshift=-2mm,yshift=-3mm,yshifttext=-1mm}}%
{attach boxed title to top left
={xshift=2mm,yshift=-3mm,yshifttext=-1mm}}}
%StopShownPreambleCommands
\begin{document}
\footnotesize
\kant[2][1] \begin{exa}{Example}
\tcbifoddpage{odd}{even} example \end{exa}
\kant[6][1] \begin{exa}{Another}
\tcbifoddpage{odd}{even} example \end{exa}
\kant[10]
\end{document}
