diff --git a/doc/salome/gui/NETGENPLUGIN/input/netgen_2d_3d_hypo.doc b/doc/salome/gui/NETGENPLUGIN/input/netgen_2d_3d_hypo.doc
index 87e31cb..8cc306e 100644
--- a/doc/salome/gui/NETGENPLUGIN/input/netgen_2d_3d_hypo.doc
+++ b/doc/salome/gui/NETGENPLUGIN/input/netgen_2d_3d_hypo.doc
@@ -94,6 +94,8 @@ each other.
 NETGEN differ from those in the 1D mesh generated by Regular_1D
 algorithm, resulting in different 2D and 3D meshes.
 
+\note In the case where two points are geometrically confounded, a single node is generated.
+
 */