\begin{filecontents}{example.tex}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Generic psfragx file to check the
%% coordinates of the bounding box
%% to use it, replace the .eps file
%% below with your own .eps file
%% It will generate example.tex and
%% example.eps, so rm these before using.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\documentclass{article}
\usepackage[T1]{fontenc}
\usepackage[ansinew]{inputenc}
\usepackage[sub,ovp]{psfragx}
\usepackage{overpic,color}

\pagestyle{empty}

\begin{document}
\section*{Test of psfragx}
\vspace*{2in}
\begin{overpic}[height=.25\textheight,width=.75\textwidth]{example.eps}
%\begin{overpic}[height=3in,width=5in]{example.eps}
%% Test Coordinates
%\put(0,0){\large\bf (0,0)}
%\put(0,100){\large\bf (0,100)}
%\put(100,0){\large\bf (100,0)}
\put(100,100){\large\bf (100,100)}
%% Our additions
\put(0,-3){$-\pi$}
\put(25,-3){$-\pi/2$}
\put(50,-3){$0$}
\put(75,-3){$\pi/2$}
\put(100,-3){$\pi$}
\put(0,2){\vector(1,0){100}} % Y-axis
\put(50,1){\vector(0,1){55}} % X-axis

\end{overpic}

\end{document}
\end{filecontents}
\begin{filecontents*}{example.eps}
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%%CreationDate: Thu Oct 16 08:55:48 2003
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end
%%EndProlog
%%Page: 1 1
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grestore
end
showpage
%%Trailer
%%DocumentFonts: Helvetica
%%Pages: 1
\end{filecontents*}
\input{example.tex}