Index: trunk/DOC/documentation/disvert.tex
===================================================================
--- trunk/DOC/documentation/disvert.tex	(revision 892)
+++ trunk/DOC/documentation/disvert.tex	(revision 927)
@@ -52,5 +52,6 @@
 \end{itemize}
 
-The Exner function: definition. 
+The Exner function: 
+$pk = C_p \times (p/preff)^\kappa$.
 It corresponds to the pressure levels within the layers.
 Used for the computation of the potential temperature.
@@ -84,4 +85,14 @@
 of the altitude (in km) of the atmospheric level (one per line of the file).
 
+For planetary applications, the usual way to go is to use \textsf{disvert\_noterre.F} together with \textsf{z2sig.def}.
+The sigma levels are computed as: 
+\begin{itemize}
+\item $H$ is the first value in \textsf{z2sig.def}, $zsig$ are the following values in \textsf{z2sig.def}
+\item $\sigma(1)=1$
+\item l=2 to llm: $\sigma(l)= 0.5 \times (\exp(-zsig(l)/H)+\exp(-zsig(l-1)/H))$
+\item $\sigma(llm+1)=0$
+\end{itemize}
+The $ap$ and $bp$ values, defining the interface pressure levels, are then computed using these sigma values, the reference pressure $preff$, and the transition pressure $pa$. The values of $preff$ and $pa$ are read in the \textsf{start.nc} file, in the control array.
+
 \item Interface pressures: 
 computed in \textsf{caldyn0.F, caldyn.F, integrd.F, leapfrog.F}
Index: trunk/DOC/documentation/newstart.tex
===================================================================
--- trunk/DOC/documentation/newstart.tex	(revision 892)
+++ trunk/DOC/documentation/newstart.tex	(revision 927)
@@ -63,5 +63,5 @@
 \end{itemize}
 
-Currently, this tool is well adapted for Venus and Titan, so the corresponding routine is called \textsf{newstart-VT.F}, located in the \textsf{dyn3d} directory. As for the \textsf{start2archive} tool, it is compiled the same way as the GCM. 
+Currently, this tool is well adapted for Venus and Titan, so the corresponding routine is called \textsf{newstart-VT.F}, located in the \textsf{dyn3d} directory. As for the \textsf{start2archive} tool, it is compiled the same way as the GCM (in sequential only). 
 
 As inputs, it takes the \textsf{start\_archive.nc} file with the initial state to be modified, and the \textsf{traceur.def} and \textsf{z2sig.def} files.
Index: trunk/DOC/documentation/rcm1d.tex
===================================================================
--- trunk/DOC/documentation/rcm1d.tex	(revision 892)
+++ trunk/DOC/documentation/rcm1d.tex	(revision 927)
@@ -52,5 +52,5 @@
 The goal of this tool is to initialize the model the same way \textsf{gcm.F} does on 3D, but only on a single column, so that the physics may be tested without any dynamics.
 
-It can be compiled with a command like (e.g. for 50 layers):
+It can be compiled (sequential only) with a command like (e.g. for 50 layers):
 
 \textsf{makelmdz -p venus -d 50 rcm1d}