# export the mesh in a MED file
tetra.ExportMED("/tmp/meshMED.med", 0)
+
+# export a group in a MED file
+face = geompy.SubShapeAll( box, geompy.ShapeType["FACE"])[0] # a box side
+group = tetra.GroupOnGeom( face, "face group" ) # group of 2D elements on the <face>
+tetra.ExportMED("/tmp/groupMED.med", meshPart=group)
\endcode
<br>
nGroup = mesh.GroupOnGeom( face, "nodes on face", NODE)
subMesh = localAlgo.GetSubMesh()
-# make a new mesh by copying different part of the mesh
+# make a new mesh by copying different parts of the mesh
# 1. copy the whole mesh
newMesh = CopyMesh( mesh, "whole mesh copy")