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--- a/doc/ctsim.tex
+++ b/doc/ctsim.tex
@@ -1,26 +1,75 @@
-\documentstyle[a4,texhelp]{report} 
+\documentclass[11pt,texhelp]{report} 
+\usepackage[dvips]{graphics}
+
+\begin{document} 
+
+\newcommand{\ctsim}{{\tt ctsim}}
+
+
 \title{CTSim - An Open-Source Computed Tomography Simulator} 
-\author{Kevin Rosenberg} 
+\author{Kevin Rosenberg, MD\footnote{San Juan Regional Medical Center, 801 W. Maple, Farmington NM 87401. Phone: (505) 599-6103. E-mail: kevin@rosenberg.net}} 
 \date{July 2000} 
-\begin{document} 
 \maketitle 
+
 \chapter{Introduction} 
-Welcome to CT.
-\section{Theory} 
-Theory of CT.
-\chapter{The Programs}
+Computed Tomography is the process of taking projection of X-ray data
+though and object and using sophisticated mathematics to estimate
+information about the interior of that object.
+
+\chapter{Installation}
+\subsection{Requirements}
+\begin{itemize}
+
+	\item Apache or other CGI compatible web server
+
+	\item Perl (version 4.0 or higher)
+
+	\item A client web browser than can display PNG files. Most
+	current web browswer do support PNG.
+
+\end{itemize}
+
+\subsection{Download}
+\subsection{Install Binary Distribution}
+\subsection{Build From Sources}
+
+\chapter{The Programs} 
+
 \section{ctsim - The Graphical User Interface}
-{\program ctsim} is the graphical shell for the CTSim project. {\program ctsim} has most of the capabilities of the CTSim project. There are still functions that are only available to the command line tools.
-\section{tools - The Command Line Lnterface}
+\ctsim\ is the graphical shell for the CTSim project. It is
+written using the wxLibrary for cross-platform compatibility with GTK,
+Motif, and Microsoft Windows.
+
+\ctsim\ incorporates most of the capabilities of the CTSim
+project. There are still functions that are only available to the
+command line tools.
+
+\subsection{Usage}
+ctsim [OPTIONS] [files to open...]
+
+\ctsim\ can open projection files and image files.
+
+\section{The Web Browser CGI Interface}
+\subsection{Overview}
+The CGI program {\tt ctsim.cgi} takes projections of a standard
+phantom object, performs reconstruction, and then compares the
+rasterized phantom object with the reconstruction. The comparison is
+performed both visually by an image subtraction as well as by standard
+statistics as described by Herman\cite{HERMAN80}.
+
+\section{tools - The Command Line Interface}
 \subsection{phm2pj}
+Converts a phantom object to a set of projections
+
+{\tt phm2pj} simulates the process of collection of X-Ray projection data
+such as collected by a CT scanner.
+
 \subsection{pjrec}
+
 \subsection{phm2if}
-\centerline{This is a centered line}
-\begin{center}
-This is a 
-centered paragraph.
-\end{center}
 
-{\bf This is in bold font}
+\bibliographystyle{abbrv}
+\bibliography{yes}
+
 
 \end{document}