From 26f7d959c8e5edf400521bbcbc5d63894f3682da Mon Sep 17 00:00:00 2001
From: JGonzalez <jorge.gonzalez@upm.es>
Date: Thu, 5 Mar 2026 20:14:11 +0100
Subject: [PATCH] txs auto checkin

---
 doc/user-manual/fpakc_UserManual.tex | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/doc/user-manual/fpakc_UserManual.tex b/doc/user-manual/fpakc_UserManual.tex
index 7e7fdef..27c0a32 100644
--- a/doc/user-manual/fpakc_UserManual.tex
+++ b/doc/user-manual/fpakc_UserManual.tex
@@ -616,6 +616,11 @@ make
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
       \subsection{physicalSurfaces}
         Array of objects that links the named surfaces of the mesh to the models in \textbf{boundaries.particles} and \textbf{boundaries.EM}.
+        Each element of the array has the following items:
+        \begin{itemize}
+          \item \textbf{index}. Integer.
+            Index of the edge surface as defined in the mesh file.
+        \end{itemize}
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
       \subsection{inject}