diff --git a/src/cpu/VirtualFluidsCore/CoProcessors/CoProcessor.cpp b/src/cpu/VirtualFluidsCore/CoProcessors/CoProcessor.cpp
index e03555d596ee98e53cb1f529434a6ce0e703a761..cd74e23229799f23688a820efbe3c06a5ce3a272 100644
--- a/src/cpu/VirtualFluidsCore/CoProcessors/CoProcessor.cpp
+++ b/src/cpu/VirtualFluidsCore/CoProcessors/CoProcessor.cpp
@@ -1,3 +1,36 @@
+//=======================================================================================
+// ____          ____    __    ______     __________   __      __       __        __         
+// \    \       |    |  |  |  |   _   \  |___    ___| |  |    |  |     /  \      |  |        
+//  \    \      |    |  |  |  |  |_)   |     |  |     |  |    |  |    /    \     |  |        
+//   \    \     |    |  |  |  |   _   /      |  |     |  |    |  |   /  /\  \    |  |        
+//    \    \    |    |  |  |  |  | \  \      |  |     |   \__/   |  /  ____  \   |  |____    
+//     \    \   |    |  |__|  |__|  \__\     |__|      \________/  /__/    \__\  |_______|   
+//      \    \  |    |   ________________________________________________________________    
+//       \    \ |    |  |  ______________________________________________________________|   
+//        \    \|    |  |  |         __          __     __     __     ______      _______    
+//         \         |  |  |_____   |  |        |  |   |  |   |  |   |   _  \    /  _____)   
+//          \        |  |   _____|  |  |        |  |   |  |   |  |   |  | \  \   \_______    
+//           \       |  |  |        |  |_____   |   \_/   |   |  |   |  |_/  /    _____  |
+//            \ _____|  |__|        |________|   \_______/    |__|   |______/    (_______/   
+//
+//  This file is part of VirtualFluids. VirtualFluids is free software: you can 
+//  redistribute it and/or modify it under the terms of the GNU General Public
+//  License as published by the Free Software Foundation, either version 3 of 
+//  the License, or (at your option) any later version.
+//  
+//  VirtualFluids is distributed in the hope that it will be useful, but WITHOUT 
+//  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 
+//  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License 
+//  for more details.
+//  
+//  You should have received a copy of the GNU General Public License along
+//  with VirtualFluids (see COPYING.txt). If not, see <http://www.gnu.org/licenses/>.
+//
+//! \file CoProcessor.cpp
+//! \ingroup CoProcessors
+//! \author Konstantin Kutscher
+//=======================================================================================
+
 #include "CoProcessor.h"
 
 #include "Grid3D.h"
diff --git a/src/cpu/VirtualFluidsCore/CoProcessors/CoProcessor.h b/src/cpu/VirtualFluidsCore/CoProcessors/CoProcessor.h
index 69fc1e33b4747ac23c2071c687b684b265985e34..6abcda31a7fe6cb59d207762b9f99675f717eae5 100644
--- a/src/cpu/VirtualFluidsCore/CoProcessors/CoProcessor.h
+++ b/src/cpu/VirtualFluidsCore/CoProcessors/CoProcessor.h
@@ -1,3 +1,36 @@
+//=======================================================================================
+// ____          ____    __    ______     __________   __      __       __        __         
+// \    \       |    |  |  |  |   _   \  |___    ___| |  |    |  |     /  \      |  |        
+//  \    \      |    |  |  |  |  |_)   |     |  |     |  |    |  |    /    \     |  |        
+//   \    \     |    |  |  |  |   _   /      |  |     |  |    |  |   /  /\  \    |  |        
+//    \    \    |    |  |  |  |  | \  \      |  |     |   \__/   |  /  ____  \   |  |____    
+//     \    \   |    |  |__|  |__|  \__\     |__|      \________/  /__/    \__\  |_______|   
+//      \    \  |    |   ________________________________________________________________    
+//       \    \ |    |  |  ______________________________________________________________|   
+//        \    \|    |  |  |         __          __     __     __     ______      _______    
+//         \         |  |  |_____   |  |        |  |   |  |   |  |   |   _  \    /  _____)   
+//          \        |  |   _____|  |  |        |  |   |  |   |  |   |  | \  \   \_______    
+//           \       |  |  |        |  |_____   |   \_/   |   |  |   |  |_/  /    _____  |
+//            \ _____|  |__|        |________|   \_______/    |__|   |______/    (_______/   
+//
+//  This file is part of VirtualFluids. VirtualFluids is free software: you can 
+//  redistribute it and/or modify it under the terms of the GNU General Public
+//  License as published by the Free Software Foundation, either version 3 of 
+//  the License, or (at your option) any later version.
+//  
+//  VirtualFluids is distributed in the hope that it will be useful, but WITHOUT 
+//  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 
+//  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License 
+//  for more details.
+//  
+//  You should have received a copy of the GNU General Public License along
+//  with VirtualFluids (see COPYING.txt). If not, see <http://www.gnu.org/licenses/>.
+//
+//! \file CoProcessor.h
+//! \ingroup CoProcessors
+//! \author Konstantin Kutscher
+//=======================================================================================
+
 #ifndef CoProcessor_H
 #define CoProcessor_H
 
@@ -6,12 +39,24 @@
 class Grid3D;
 class UbScheduler;
 
+//! \class CoProcessor
+//! \brief An abstract class implements observer design pettern
 class CoProcessor
 {
 public:
+   //! Class default constructor
    CoProcessor();
+   //! \brief Construct CoProcessor object for grid object and scheduler object.
+   //! \pre The Grid3D and UbScheduler objects must exist.
+   //! \param grid is observable Grid3D object
+   //! \param s is UbScheduler object for scheduling of observer
+   //! \details
+   //! Class CoProcessor implements the observer design pettern. CoProcessor object is observer.  Grid3D object is observable.
    CoProcessor(SPtr<Grid3D> grid, SPtr<UbScheduler> s);
+   //! Class destructor
    virtual ~CoProcessor();
+   //! \brief Updates observer
+   //! \param step is the actual time step
    virtual void process(double step) = 0;
 protected:
    SPtr<Grid3D> grid;
diff --git a/src/cpu/VirtualFluidsCore/CoProcessors/NUPSCounterCoProcessor.cpp b/src/cpu/VirtualFluidsCore/CoProcessors/NUPSCounterCoProcessor.cpp
index a42e2aa3708e9397c1f0ded517edb6e8917dad68..482d9a05d20874a21fac04328e916b109538722c 100644
--- a/src/cpu/VirtualFluidsCore/CoProcessors/NUPSCounterCoProcessor.cpp
+++ b/src/cpu/VirtualFluidsCore/CoProcessors/NUPSCounterCoProcessor.cpp
@@ -1,3 +1,36 @@
+//=======================================================================================
+// ____          ____    __    ______     __________   __      __       __        __         
+// \    \       |    |  |  |  |   _   \  |___    ___| |  |    |  |     /  \      |  |        
+//  \    \      |    |  |  |  |  |_)   |     |  |     |  |    |  |    /    \     |  |        
+//   \    \     |    |  |  |  |   _   /      |  |     |  |    |  |   /  /\  \    |  |        
+//    \    \    |    |  |  |  |  | \  \      |  |     |   \__/   |  /  ____  \   |  |____    
+//     \    \   |    |  |__|  |__|  \__\     |__|      \________/  /__/    \__\  |_______|   
+//      \    \  |    |   ________________________________________________________________    
+//       \    \ |    |  |  ______________________________________________________________|   
+//        \    \|    |  |  |         __          __     __     __     ______      _______    
+//         \         |  |  |_____   |  |        |  |   |  |   |  |   |   _  \    /  _____)   
+//          \        |  |   _____|  |  |        |  |   |  |   |  |   |  | \  \   \_______    
+//           \       |  |  |        |  |_____   |   \_/   |   |  |   |  |_/  /    _____  |
+//            \ _____|  |__|        |________|   \_______/    |__|   |______/    (_______/   
+//
+//  This file is part of VirtualFluids. VirtualFluids is free software: you can 
+//  redistribute it and/or modify it under the terms of the GNU General Public
+//  License as published by the Free Software Foundation, either version 3 of 
+//  the License, or (at your option) any later version.
+//  
+//  VirtualFluids is distributed in the hope that it will be useful, but WITHOUT 
+//  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 
+//  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License 
+//  for more details.
+//  
+//  You should have received a copy of the GNU General Public License along
+//  with VirtualFluids (see COPYING.txt). If not, see <http://www.gnu.org/licenses/>.
+//
+//! \file NUPSCounterCoProcessor.cpp
+//! \ingroup CoProcessors
+//! \author Konstantin Kutscher
+//=======================================================================================
+
 #include "NUPSCounterCoProcessor.h"
 
 #include "Communicator.h"
@@ -19,9 +52,7 @@ NUPSCounterCoProcessor::NUPSCounterCoProcessor(SPtr<Grid3D> grid, SPtr<UbSchedul
       double nop = comm->getNumberOfProcesses();
       int minInitLevel = grid->getCoarsestInitializedLevel();
       int maxInitLevel = grid->getFinestInitializedLevel();
-      int gl = 2;
       UbTupleInt3 blocknx = grid->getBlockNX();
-      //double nod = (val<1>(blocknx)+gl) * (val<2>(blocknx)+gl) * (val<3>(blocknx)+gl);
       double nod = (double)(val<1>(blocknx)) * (double)(val<2>(blocknx)) * (double)(val<3>(blocknx));
       nup = 0;
 
@@ -49,28 +80,14 @@ void NUPSCounterCoProcessor::collectData(double step)
    if (comm->getProcessID() == comm->getRoot())
    {
       double time = timer.stop();
-      //double time = timer.elapsed();
-      //std::ofstream ostr;
-      //std::string fname = path;
-      //ostr.open(fname.c_str(), std::ios_base::out | std::ios_base::app);
-      //if(!ostr)
-      //{ 
-      //   ostr.clear(); 
-      //   std::string path = UbSystem::getPathFromString(fname);
-      //   if(path.size()>0){ UbSystem::makeDirectory(path); ostr.open(fname.c_str(), std::ios_base::out | std::ios_base::app);}
-      //   if(!ostr) throw UbException(UB_EXARGS,"couldn't open file "+fname);
-      //}
       double nups_t = nup_t*(step-nupsStep)/time;
-      double nups = nup*(step-nupsStep)/time;//timer.getTotalTime();
+      double nups = nup*(step-nupsStep)/time;
       double tnups = nups/(double)numOfThreads;
-      //ostr << nups << std::endl;
-      //ostr.close();
       UBLOG(logINFO, "Calculation step = "<<step);
       UBLOG(logINFO, "Total performance = "<<nups_t<<" NUPS");
       UBLOG(logINFO, "Performance per process = "<<nups<<" NUPS");
       UBLOG(logINFO, "Performance per thread = "<<tnups<<" NUPS");
       UBLOG(logINFO, "Time for " << step-nupsStep <<" steps = "<< time <<" s");
-      //timer.restart();
       nupsStep = step;
       timer.resetAndStart();
    }
diff --git a/src/cpu/VirtualFluidsCore/CoProcessors/NUPSCounterCoProcessor.h b/src/cpu/VirtualFluidsCore/CoProcessors/NUPSCounterCoProcessor.h
index dd101a6eee927577a25214d3f7e28859a7ecd1ae..6c68025212f9e119eaa55ae4e89d10da4df2647a 100644
--- a/src/cpu/VirtualFluidsCore/CoProcessors/NUPSCounterCoProcessor.h
+++ b/src/cpu/VirtualFluidsCore/CoProcessors/NUPSCounterCoProcessor.h
@@ -1,9 +1,35 @@
-/*
-*  NUPSCounterCoProcessor.h
-*
-*  Created on: 03.05.2011
-*  Author: K. Kucher
-*/
+//=======================================================================================
+// ____          ____    __    ______     __________   __      __       __        __         
+// \    \       |    |  |  |  |   _   \  |___    ___| |  |    |  |     /  \      |  |        
+//  \    \      |    |  |  |  |  |_)   |     |  |     |  |    |  |    /    \     |  |        
+//   \    \     |    |  |  |  |   _   /      |  |     |  |    |  |   /  /\  \    |  |        
+//    \    \    |    |  |  |  |  | \  \      |  |     |   \__/   |  /  ____  \   |  |____    
+//     \    \   |    |  |__|  |__|  \__\     |__|      \________/  /__/    \__\  |_______|   
+//      \    \  |    |   ________________________________________________________________    
+//       \    \ |    |  |  ______________________________________________________________|   
+//        \    \|    |  |  |         __          __     __     __     ______      _______    
+//         \         |  |  |_____   |  |        |  |   |  |   |  |   |   _  \    /  _____)   
+//          \        |  |   _____|  |  |        |  |   |  |   |  |   |  | \  \   \_______    
+//           \       |  |  |        |  |_____   |   \_/   |   |  |   |  |_/  /    _____  |
+//            \ _____|  |__|        |________|   \_______/    |__|   |______/    (_______/   
+//
+//  This file is part of VirtualFluids. VirtualFluids is free software: you can 
+//  redistribute it and/or modify it under the terms of the GNU General Public
+//  License as published by the Free Software Foundation, either version 3 of 
+//  the License, or (at your option) any later version.
+//  
+//  VirtualFluids is distributed in the hope that it will be useful, but WITHOUT 
+//  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 
+//  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License 
+//  for more details.
+//  
+//  You should have received a copy of the GNU General Public License along
+//  with VirtualFluids (see COPYING.txt). If not, see <http://www.gnu.org/licenses/>.
+//
+//! \file NUPSCounterCoProcessor.h
+//! \ingroup CoProcessors
+//! \author Konstantin Kutscher
+//=======================================================================================
 
 #ifndef NUPSCOUNTERCoProcessor_H_
 #define NUPSCOUNTERCoProcessor_H_
@@ -17,18 +43,27 @@ class Communicator;
 class Grid3D;
 class UbScheduler;
 
+//! \class NUPSCounterCoProcessor
+//! \brief A class calculates Nodal Updates Per Second (NUPS)
 class NUPSCounterCoProcessor: public CoProcessor
 {
 public:
+   //! \brief Construct NUPSCounterCoProcessor object for grid object and scheduler object.
+   //! \pre The Grid3D and UbScheduler objects must exist.
+   //! \param grid is observable Grid3D object
+   //! \param s is UbScheduler object for scheduling of observer
+   //! \param numOfThreads is number of threads
+   //! \param comm is Communicator object
    NUPSCounterCoProcessor(SPtr<Grid3D> grid, SPtr<UbScheduler> s, int numOfThreads, SPtr<Communicator> comm);
    virtual ~NUPSCounterCoProcessor();
 
    void process(double step)override;
 
 protected:
+   //! Collect data for calculation of NUPS
+   //! \param step is a time step
    void collectData(double step);
    UbTimer timer;
-   //boost::timer timer;
    int numOfThreads;
    double numberOfNodes;
    double numberOfBlocks;
diff --git a/src/cpu/VirtualFluidsCore/CoProcessors/WriteBlocksCoProcessor.cpp b/src/cpu/VirtualFluidsCore/CoProcessors/WriteBlocksCoProcessor.cpp
index f27d2d59f57e6e3f10e21510113635082b637415..57a23c176d32093befeeddbc9b366d61db70cc13 100644
--- a/src/cpu/VirtualFluidsCore/CoProcessors/WriteBlocksCoProcessor.cpp
+++ b/src/cpu/VirtualFluidsCore/CoProcessors/WriteBlocksCoProcessor.cpp
@@ -1,3 +1,36 @@
+//=======================================================================================
+// ____          ____    __    ______     __________   __      __       __        __         
+// \    \       |    |  |  |  |   _   \  |___    ___| |  |    |  |     /  \      |  |        
+//  \    \      |    |  |  |  |  |_)   |     |  |     |  |    |  |    /    \     |  |        
+//   \    \     |    |  |  |  |   _   /      |  |     |  |    |  |   /  /\  \    |  |        
+//    \    \    |    |  |  |  |  | \  \      |  |     |   \__/   |  /  ____  \   |  |____    
+//     \    \   |    |  |__|  |__|  \__\     |__|      \________/  /__/    \__\  |_______|   
+//      \    \  |    |   ________________________________________________________________    
+//       \    \ |    |  |  ______________________________________________________________|   
+//        \    \|    |  |  |         __          __     __     __     ______      _______    
+//         \         |  |  |_____   |  |        |  |   |  |   |  |   |   _  \    /  _____)   
+//          \        |  |   _____|  |  |        |  |   |  |   |  |   |  | \  \   \_______    
+//           \       |  |  |        |  |_____   |   \_/   |   |  |   |  |_/  /    _____  |
+//            \ _____|  |__|        |________|   \_______/    |__|   |______/    (_______/   
+//
+//  This file is part of VirtualFluids. VirtualFluids is free software: you can 
+//  redistribute it and/or modify it under the terms of the GNU General Public
+//  License as published by the Free Software Foundation, either version 3 of 
+//  the License, or (at your option) any later version.
+//  
+//  VirtualFluids is distributed in the hope that it will be useful, but WITHOUT 
+//  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 
+//  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License 
+//  for more details.
+//  
+//  You should have received a copy of the GNU General Public License along
+//  with VirtualFluids (see COPYING.txt). If not, see <http://www.gnu.org/licenses/>.
+//
+//! \file WriteBlocksCoProcessor.cpp
+//! \ingroup CoProcessors
+//! \author Konstantin Kutscher
+//=======================================================================================
+
 #include "WriteBlocksCoProcessor.h"
 #include "basics/writer/WbWriterVtkXmlASCII.h"
 
diff --git a/src/cpu/VirtualFluidsCore/CoProcessors/WriteBlocksCoProcessor.h b/src/cpu/VirtualFluidsCore/CoProcessors/WriteBlocksCoProcessor.h
index 041d2958632700d07d2fa4736a801d744365a47f..352029cd10ffd390f8f5c55f34f7dbaac9d01aa7 100644
--- a/src/cpu/VirtualFluidsCore/CoProcessors/WriteBlocksCoProcessor.h
+++ b/src/cpu/VirtualFluidsCore/CoProcessors/WriteBlocksCoProcessor.h
@@ -1,9 +1,35 @@
-/*
-*  WriteBlocksCoProcessor.h
-*
-*  Created on: 24.09.2012
-*  Author: K. Kucher
-*/
+//=======================================================================================
+// ____          ____    __    ______     __________   __      __       __        __         
+// \    \       |    |  |  |  |   _   \  |___    ___| |  |    |  |     /  \      |  |        
+//  \    \      |    |  |  |  |  |_)   |     |  |     |  |    |  |    /    \     |  |        
+//   \    \     |    |  |  |  |   _   /      |  |     |  |    |  |   /  /\  \    |  |        
+//    \    \    |    |  |  |  |  | \  \      |  |     |   \__/   |  /  ____  \   |  |____    
+//     \    \   |    |  |__|  |__|  \__\     |__|      \________/  /__/    \__\  |_______|   
+//      \    \  |    |   ________________________________________________________________    
+//       \    \ |    |  |  ______________________________________________________________|   
+//        \    \|    |  |  |         __          __     __     __     ______      _______    
+//         \         |  |  |_____   |  |        |  |   |  |   |  |   |   _  \    /  _____)   
+//          \        |  |   _____|  |  |        |  |   |  |   |  |   |  | \  \   \_______    
+//           \       |  |  |        |  |_____   |   \_/   |   |  |   |  |_/  /    _____  |
+//            \ _____|  |__|        |________|   \_______/    |__|   |______/    (_______/   
+//
+//  This file is part of VirtualFluids. VirtualFluids is free software: you can 
+//  redistribute it and/or modify it under the terms of the GNU General Public
+//  License as published by the Free Software Foundation, either version 3 of 
+//  the License, or (at your option) any later version.
+//  
+//  VirtualFluids is distributed in the hope that it will be useful, but WITHOUT 
+//  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 
+//  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License 
+//  for more details.
+//  
+//  You should have received a copy of the GNU General Public License along
+//  with VirtualFluids (see COPYING.txt). If not, see <http://www.gnu.org/licenses/>.
+//
+//! \file WriteBlocksCoProcessor.h
+//! \ingroup CoProcessors
+//! \author Konstantin Kutscher
+//=======================================================================================
 
 #ifndef WriteBlocksCoProcessor_H_
 #define WriteBlocksCoProcessor_H_
@@ -18,15 +44,26 @@ class Grid3D;
 class UbScheduler;
 class WbWriter;
 
+//! \class WriteBlocksCoProcessor
+//! \brief A class writes a block grid to a VTK-file
 class WriteBlocksCoProcessor: public CoProcessor 
 {
 public:
+   //! \brief Construct WriteBlocksCoProcessor object.
+   //! \pre The Grid3D and UbScheduler objects must exist.
+   //! \param grid is observable Grid3D object
+   //! \param s is UbScheduler object for scheduling of observer
+   //! \param path is path of folder for output
+   //! \param writer is WbWriter object
+   //! \param comm is Communicator object
    WriteBlocksCoProcessor(SPtr<Grid3D> grid, SPtr<UbScheduler> s, const std::string& path, WbWriter* const writer, SPtr<Communicator> comm);
    virtual ~WriteBlocksCoProcessor();
 
    void process(double step) override;
 
 protected:
+   //! Collect data for VTK-file
+   //! \param step is a time step
    void collectData(double step);
 
    std::string path;
diff --git a/src/cpu/VirtualFluidsCore/CoProcessors/WriteBoundaryConditionsCoProcessor.cpp b/src/cpu/VirtualFluidsCore/CoProcessors/WriteBoundaryConditionsCoProcessor.cpp
index d74e1edf3c453ae0efd28355552f0bf55580cb82..5749cd0cb8e616aea91629ac7cb16baad653d248 100644
--- a/src/cpu/VirtualFluidsCore/CoProcessors/WriteBoundaryConditionsCoProcessor.cpp
+++ b/src/cpu/VirtualFluidsCore/CoProcessors/WriteBoundaryConditionsCoProcessor.cpp
@@ -1,3 +1,36 @@
+//=======================================================================================
+// ____          ____    __    ______     __________   __      __       __        __         
+// \    \       |    |  |  |  |   _   \  |___    ___| |  |    |  |     /  \      |  |        
+//  \    \      |    |  |  |  |  |_)   |     |  |     |  |    |  |    /    \     |  |        
+//   \    \     |    |  |  |  |   _   /      |  |     |  |    |  |   /  /\  \    |  |        
+//    \    \    |    |  |  |  |  | \  \      |  |     |   \__/   |  /  ____  \   |  |____    
+//     \    \   |    |  |__|  |__|  \__\     |__|      \________/  /__/    \__\  |_______|   
+//      \    \  |    |   ________________________________________________________________    
+//       \    \ |    |  |  ______________________________________________________________|   
+//        \    \|    |  |  |         __          __     __     __     ______      _______    
+//         \         |  |  |_____   |  |        |  |   |  |   |  |   |   _  \    /  _____)   
+//          \        |  |   _____|  |  |        |  |   |  |   |  |   |  | \  \   \_______    
+//           \       |  |  |        |  |_____   |   \_/   |   |  |   |  |_/  /    _____  |
+//            \ _____|  |__|        |________|   \_______/    |__|   |______/    (_______/   
+//
+//  This file is part of VirtualFluids. VirtualFluids is free software: you can 
+//  redistribute it and/or modify it under the terms of the GNU General Public
+//  License as published by the Free Software Foundation, either version 3 of 
+//  the License, or (at your option) any later version.
+//  
+//  VirtualFluids is distributed in the hope that it will be useful, but WITHOUT 
+//  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 
+//  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License 
+//  for more details.
+//  
+//  You should have received a copy of the GNU General Public License along
+//  with VirtualFluids (see COPYING.txt). If not, see <http://www.gnu.org/licenses/>.
+//
+//! \file WriteBoundaryConditionsCoProcessor.cpp
+//! \ingroup CoProcessors
+//! \author Konstantin Kutscher
+//=======================================================================================
+
 #include "WriteBoundaryConditionsCoProcessor.h"
 #include "LBMKernel.h"
 #include "BCProcessor.h"
@@ -130,7 +163,7 @@ void WriteBoundaryConditionsCoProcessor::addDataGeo(SPtr<Block3D> block)
    SPtr<BCArray3D> bcArray = kernel->getBCProcessor()->getBCArray();
 
    //knotennummerierung faengt immer bei 0 an!
-    unsigned int SWB, SEB, NEB, NWB, SWT, SET, NET, NWT;
+   unsigned int SWB, SEB, NEB, NWB, SWT, SET, NET, NWT;
 
    int minX1 = 0;
    int minX2 = 0;
diff --git a/src/cpu/VirtualFluidsCore/CoProcessors/WriteBoundaryConditionsCoProcessor.h b/src/cpu/VirtualFluidsCore/CoProcessors/WriteBoundaryConditionsCoProcessor.h
index 407d56b3ee67d6986b7a4deed8ecdd8473ac5063..ff73768abf9e70b150689c1a05dedc8b9481439a 100644
--- a/src/cpu/VirtualFluidsCore/CoProcessors/WriteBoundaryConditionsCoProcessor.h
+++ b/src/cpu/VirtualFluidsCore/CoProcessors/WriteBoundaryConditionsCoProcessor.h
@@ -1,3 +1,36 @@
+//=======================================================================================
+// ____          ____    __    ______     __________   __      __       __        __         
+// \    \       |    |  |  |  |   _   \  |___    ___| |  |    |  |     /  \      |  |        
+//  \    \      |    |  |  |  |  |_)   |     |  |     |  |    |  |    /    \     |  |        
+//   \    \     |    |  |  |  |   _   /      |  |     |  |    |  |   /  /\  \    |  |        
+//    \    \    |    |  |  |  |  | \  \      |  |     |   \__/   |  /  ____  \   |  |____    
+//     \    \   |    |  |__|  |__|  \__\     |__|      \________/  /__/    \__\  |_______|   
+//      \    \  |    |   ________________________________________________________________    
+//       \    \ |    |  |  ______________________________________________________________|   
+//        \    \|    |  |  |         __          __     __     __     ______      _______    
+//         \         |  |  |_____   |  |        |  |   |  |   |  |   |   _  \    /  _____)   
+//          \        |  |   _____|  |  |        |  |   |  |   |  |   |  | \  \   \_______    
+//           \       |  |  |        |  |_____   |   \_/   |   |  |   |  |_/  /    _____  |
+//            \ _____|  |__|        |________|   \_______/    |__|   |______/    (_______/   
+//
+//  This file is part of VirtualFluids. VirtualFluids is free software: you can 
+//  redistribute it and/or modify it under the terms of the GNU General Public
+//  License as published by the Free Software Foundation, either version 3 of 
+//  the License, or (at your option) any later version.
+//  
+//  VirtualFluids is distributed in the hope that it will be useful, but WITHOUT 
+//  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 
+//  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License 
+//  for more details.
+//  
+//  You should have received a copy of the GNU General Public License along
+//  with VirtualFluids (see COPYING.txt). If not, see <http://www.gnu.org/licenses/>.
+//
+//! \file WriteBoundaryConditionsCoProcessor.h
+//! \ingroup CoProcessors
+//! \author Konstantin Kutscher
+//=======================================================================================
+
 #ifndef WriteBoundaryConditionsCoProcessor_H
 #define WriteBoundaryConditionsCoProcessor_H
 
@@ -15,16 +48,26 @@ class WbWriter;
 class Block3D;
 class LBMUnitConverter;
 
+//! \brief A class writes boundary conditions information to a VTK-file
 class WriteBoundaryConditionsCoProcessor : public  CoProcessor
 {
 public:
    WriteBoundaryConditionsCoProcessor();
+   //! \brief Construct WriteBoundaryConditionsCoProcessor object
+   //! \pre The Grid3D and UbScheduler objects must exist
+   //! \param grid is observable Grid3D object
+   //! \param s is UbScheduler object for scheduling of observer
+   //! \param path is path of folder for output
+   //! \param writer is WbWriter object
+   //! \param comm is Communicator object
    WriteBoundaryConditionsCoProcessor(SPtr<Grid3D> grid, SPtr<UbScheduler> s, const std::string& path, WbWriter* const writer, SPtr<Communicator> comm);
    ~WriteBoundaryConditionsCoProcessor() {}
 
    void process(double step) override;
 
 protected:
+   //! Collect data for VTK-file
+   //! \param step is a time step
    void collectData(double step);
    void addDataGeo(SPtr<Block3D> block);
    void clearData();
diff --git a/src/cpu/VirtualFluidsCore/CoProcessors/WriteMacroscopicQuantitiesCoProcessor.cpp b/src/cpu/VirtualFluidsCore/CoProcessors/WriteMacroscopicQuantitiesCoProcessor.cpp
index 25ce8cd39c2c59d8ed764b56f3dbc65d29f72065..8a08d434401550a910ef7422135143e5eaa991c9 100644
--- a/src/cpu/VirtualFluidsCore/CoProcessors/WriteMacroscopicQuantitiesCoProcessor.cpp
+++ b/src/cpu/VirtualFluidsCore/CoProcessors/WriteMacroscopicQuantitiesCoProcessor.cpp
@@ -1,3 +1,36 @@
+//=======================================================================================
+// ____          ____    __    ______     __________   __      __       __        __         
+// \    \       |    |  |  |  |   _   \  |___    ___| |  |    |  |     /  \      |  |        
+//  \    \      |    |  |  |  |  |_)   |     |  |     |  |    |  |    /    \     |  |        
+//   \    \     |    |  |  |  |   _   /      |  |     |  |    |  |   /  /\  \    |  |        
+//    \    \    |    |  |  |  |  | \  \      |  |     |   \__/   |  /  ____  \   |  |____    
+//     \    \   |    |  |__|  |__|  \__\     |__|      \________/  /__/    \__\  |_______|   
+//      \    \  |    |   ________________________________________________________________    
+//       \    \ |    |  |  ______________________________________________________________|   
+//        \    \|    |  |  |         __          __     __     __     ______      _______    
+//         \         |  |  |_____   |  |        |  |   |  |   |  |   |   _  \    /  _____)   
+//          \        |  |   _____|  |  |        |  |   |  |   |  |   |  | \  \   \_______    
+//           \       |  |  |        |  |_____   |   \_/   |   |  |   |  |_/  /    _____  |
+//            \ _____|  |__|        |________|   \_______/    |__|   |______/    (_______/   
+//
+//  This file is part of VirtualFluids. VirtualFluids is free software: you can 
+//  redistribute it and/or modify it under the terms of the GNU General Public
+//  License as published by the Free Software Foundation, either version 3 of 
+//  the License, or (at your option) any later version.
+//  
+//  VirtualFluids is distributed in the hope that it will be useful, but WITHOUT 
+//  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 
+//  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License 
+//  for more details.
+//  
+//  You should have received a copy of the GNU General Public License along
+//  with VirtualFluids (see COPYING.txt). If not, see <http://www.gnu.org/licenses/>.
+//
+//! \file WriteMacroscopicQuantitiesCoProcessor.cpp
+//! \ingroup CoProcessors
+//! \author Konstantin Kutscher
+//=======================================================================================
+
 #include "WriteMacroscopicQuantitiesCoProcessor.h"
 #include "LBMKernel.h"
 #include "BCProcessor.h"
diff --git a/src/cpu/VirtualFluidsCore/CoProcessors/WriteMacroscopicQuantitiesCoProcessor.h b/src/cpu/VirtualFluidsCore/CoProcessors/WriteMacroscopicQuantitiesCoProcessor.h
index e112fc10ab9b4b176b77099cc5f7cd44a7717fc4..d650bc881e0053f139b802c3819335815abde38f 100644
--- a/src/cpu/VirtualFluidsCore/CoProcessors/WriteMacroscopicQuantitiesCoProcessor.h
+++ b/src/cpu/VirtualFluidsCore/CoProcessors/WriteMacroscopicQuantitiesCoProcessor.h
@@ -1,3 +1,36 @@
+//=======================================================================================
+// ____          ____    __    ______     __________   __      __       __        __         
+// \    \       |    |  |  |  |   _   \  |___    ___| |  |    |  |     /  \      |  |        
+//  \    \      |    |  |  |  |  |_)   |     |  |     |  |    |  |    /    \     |  |        
+//   \    \     |    |  |  |  |   _   /      |  |     |  |    |  |   /  /\  \    |  |        
+//    \    \    |    |  |  |  |  | \  \      |  |     |   \__/   |  /  ____  \   |  |____    
+//     \    \   |    |  |__|  |__|  \__\     |__|      \________/  /__/    \__\  |_______|   
+//      \    \  |    |   ________________________________________________________________    
+//       \    \ |    |  |  ______________________________________________________________|   
+//        \    \|    |  |  |         __          __     __     __     ______      _______    
+//         \         |  |  |_____   |  |        |  |   |  |   |  |   |   _  \    /  _____)   
+//          \        |  |   _____|  |  |        |  |   |  |   |  |   |  | \  \   \_______    
+//           \       |  |  |        |  |_____   |   \_/   |   |  |   |  |_/  /    _____  |
+//            \ _____|  |__|        |________|   \_______/    |__|   |______/    (_______/   
+//
+//  This file is part of VirtualFluids. VirtualFluids is free software: you can 
+//  redistribute it and/or modify it under the terms of the GNU General Public
+//  License as published by the Free Software Foundation, either version 3 of 
+//  the License, or (at your option) any later version.
+//  
+//  VirtualFluids is distributed in the hope that it will be useful, but WITHOUT 
+//  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 
+//  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License 
+//  for more details.
+//  
+//  You should have received a copy of the GNU General Public License along
+//  with VirtualFluids (see COPYING.txt). If not, see <http://www.gnu.org/licenses/>.
+//
+//! \file WriteMacroscopicQuantitiesCoProcessor.h
+//! \ingroup CoProcessors
+//! \author Konstantin Kutscher
+//=======================================================================================
+
 #ifndef WriteMacroscopicQuantitiesCoProcessor_H
 #define WriteMacroscopicQuantitiesCoProcessor_H
 
@@ -6,7 +39,7 @@
 #include <vector>
 
 #include "CoProcessor.h"
-
+#include "UbTuple.h"
 #include "LBMSystem.h"
 
 class Communicator;
@@ -16,10 +49,20 @@ class LBMUnitConverter;
 class WbWriter;
 class Block3D;
 
+
+//! \brief A class writes macroscopic quantities information to a VTK-file
 class WriteMacroscopicQuantitiesCoProcessor : public CoProcessor 
 {
 public:
    WriteMacroscopicQuantitiesCoProcessor();
+   //! \brief Construct WriteMacroscopicQuantitiesCoProcessor object
+   //! \pre The Grid3D and UbScheduler objects must exist
+   //! \param grid is observable Grid3D object
+   //! \param s is UbScheduler object for scheduling of observer
+   //! \param path is path of folder for output
+   //! \param writer is WbWriter object
+   //! \param conv is LBMUnitConverter object
+   //! \param comm is Communicator object
    WriteMacroscopicQuantitiesCoProcessor(SPtr<Grid3D> grid, SPtr<UbScheduler> s,
                                            const std::string& path, WbWriter* const writer, 
                                            SPtr<LBMUnitConverter> conv, SPtr<Communicator> comm);
@@ -28,7 +71,11 @@ public:
    void process(double step) override;
 
 protected:
+   //! Collect data for VTK-file
+   //! \param step is a time step
    void collectData(double step);
+   //! Collect data for VTK-file
+   //! \param block is a time step
    void addDataMQ(SPtr<Block3D> block);
    void clearData();