diff --git a/Mesh/Read_Mesh.cpp b/Mesh/Read_Mesh.cpp
index b7f23f726c513aa6300d5dc20759f82dbfcf89c8..1eb61a9cb2fb3ba00e0644c27beed0233530f63a 100644
--- a/Mesh/Read_Mesh.cpp
+++ b/Mesh/Read_Mesh.cpp
@@ -1,4 +1,4 @@
-// $Id: Read_Mesh.cpp,v 1.18 2001-08-01 16:37:15 geuzaine Exp $
+// $Id: Read_Mesh.cpp,v 1.19 2001-08-01 16:42:10 geuzaine Exp $
 
 #include "Gmsh.h"
 #include "Geo.h"
@@ -31,6 +31,10 @@
 
 /* relecture maillage au format MSH */
 
+/* Note: the 'Dirty' flag only has an influence if one doesn't load
+   the geometry along with the mesh (since we make Tree_Insert for the
+   geometrical entities). And that's what we want. */
+
 void Read_Mesh_MSH (Mesh *M, FILE *File_GEO){
 
   char String[256];