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\documentstyle{report}
%\def{\parameter{#1}}{{\it #1}}
\begin{document}
\chapter{IDAnalyticBH}
\section{Introduction}
\subsection{Purpose of Thorn}
Thorn IDAnalyticBH provides analytic initial data for vacuum black
hole spacetimes. Initial data is provided for the 3-metric, extrinsic
curvature, and if appropriate the conformal factor and it's spatial
derivatives. The current initial data sets are for a single (Schwarzschild)
black hole in isotropic coordinates, up to four Brill-Lindquist black
holes, and any number of Misner-type black holes.
\subsection{Technical Specification}
\begin{itemize}
\item{Implements} einsteinID
\item{Inherits from} einstein
\item{Tested with thorns} Einstein
\end{itemize}
\section{Theoretical Background}
\section{Algorithmic and Implementation Details}
This thorn uses no special numerical methods, however two points
are worth noting
\begin{enumerate}
\item{} The solution for Misner is obtained by summing a sequence
\item{} The spatial derivatives of the conformal metric (when required)
are calculated accurately using finite differencing of the
exact solution by a very small spacing
\end{enumerate}
\section{Using the Thorn}
This thorn can provide either the physical metric (use\_conformal=''no'')
or the conformal metric and a conformal factor (and its spatial derivatives)
(use\_conformal=''yes''). In general, the option use\_conformal=''yes'' should
be used, since ????.
\section{Parameters}
\subsection{List of all Parameters}
\subsection{Discussion}
\section{Interaction with Other Thorns}
It is still to be decided how initial data should be supplied to
for systems of evolution equations which use more or different
variables to those in the einstein implementation
\section{Future Development}
Initial data sets which are missing from this thorn include
\begin{itemize}
\item{} Boosted single black hole
\item{} Single black hole in harmonic spatial coordinates
\item{} Single black hole in Eddington-Finkelstein coordinates
\end{itemize}
\end{document}
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