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% file `eso-ex1.tex'; a framed background example
% Rolf Niepraschk, 2005-12-25, Rolf.Niepraschk@ptb.de

\documentclass[a4paper]{article}
\usepackage{eso-pic,calc}
\listfiles

\makeatletter
\AddToShipoutPicture{%
  \begingroup
    \setlength{\@tempdima}{15mm}%
    \setlength{\@tempdimb}{\paperwidth-2\@tempdima}%
    \setlength{\@tempdimc}{\paperheight-2\@tempdima}%
    \thicklines%
    \put(\LenToUnit{\@tempdima},\LenToUnit{\@tempdima}){%
      \framebox(\LenToUnit{\@tempdimb},\LenToUnit{\@tempdimc}){}}%
  \endgroup  
}
\makeatother

\begin{document}

  \section*{First page}

  This page and all the following have a frame with 15~mm
  distance from the paper edges.\newpage

  \section*{Second page} 
  
  \AddToShipoutPicture*{\put(100,100){\circle{40}}}
  
  Only this page has a circle on the lower left side. 
  
  \newpage

  \section*{Last page}
  
\end{document}