\chapter{Geometry definition in VMC} \label{chap:appendix1} \section{Geometry using VGM} Here will be more detailed things about geometry using the VGM converter. \section{Geometry using TGeoManager} Here will be more detailed things about geometry implemented using the Root Geometry Manager class. \section{Geometry using Hades Ascii like format} Here will be more detailed things about geometry a la Hades %\cite{Oakes_RStat_1999} and many authors \cite{Guimond_CVIU_2000}.