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+Introduction
+============
+
+**topIIvol** meshing tool provides sequential/parallel tools for creating volumetric tetrahedral meshes from a given topology (point-cloud `*.xyz`). 
+
+Running topIIvol Plug-in
+========================
+
+**topIIVolMesh** plug-in can be invoked via SMESH Plugin item in Mesh menu bar 
+
+.. image:: images/callTopIIVolMesh.png
+   :align: center
+
+
+**topIIVolMesh** Options
+========================
+
+
+Sequential mode
+---------------
+If the number of processors is set to 1, **topIIvol_Mesher** sequential tool is called for creating volumetric tetrahedral meshes from a given topology. The volumetric mesh can be displayed in SALOME by ticking the "Display mesh" check-box.
+
+The list of input parameters are:
+
+- DEM input file: input point cloud file;
+- Number of X points present in the input point cloud;
+- Number of Y points present in the input point cloud;
+- Number of Z points intended in the z direction;
+- Depth of the mesh needed;
+- temporary directory for calculation.
+
+Parallel mode
+---------------
+If the number of processors is greater than one, **topIIvol_ParMesher** parallel computing tool is called for creating volumetric tetrahedral meshes from a given topology. The volumetric mesh can be displayed in SALOME by ticking the "Display mesh" check-box.
+
+The list of input parameters are:
+
+- DEM input file: input point cloud file;
+- Number of X points present in the input point cloud;
+- Number of Y points present in the input point cloud;
+- Number of Z points intended in the z direction;
+- Depth of the mesh needed;
+- Number of MPI ranks
+- temporary directory for calculation.
+
+
+Distributed mode
+-----------------
+If the check-box **Distributed** is ticked,  **topIIvol_DistMesher** computing tool is called for creating embarassingly parallel distributed meshes from a given topology.
+
+The list of input parameters are:
+
+- DEM input file: input point cloud file;
+- Number of X points present in the input point cloud;
+- Number of Y points present in the input point cloud;
+- Number of Z points intended in the z direction;
+- Number of partitions in X direction;
+- Number of partitions in Y direction;
+- Number of partitions in Z direction;
+- Depth of the mesh needed;
+- Number of MPI ranks
+- temporary directory for calculation.
+