diff --git a/eo/src/utils/eoLogger.cpp b/eo/src/utils/eoLogger.cpp
index 391076126..e478ba093 100644
--- a/eo/src/utils/eoLogger.cpp
+++ b/eo/src/utils/eoLogger.cpp
@@ -21,8 +21,8 @@
 Contact: http://eodev.sourceforge.net
 
 Authors:
-     Johann Dréo <johann.dreo@thalesgroup.com>
-     Caner Candan <caner.candan@thalesgroup.com>
+Johann Dréo <johann.dreo@thalesgroup.com>
+Caner Candan <caner.candan@thalesgroup.com>
 
 */
 
@@ -40,17 +40,7 @@ Authors:
 
 #include "eoLogger.h"
 
-eoLogger::eoLogger() :
-    std::ostream(&_obuf),
-
-    _verbose("quiet", "verbose", "Set the verbose level", 'v'),
-    _printVerboseLevels(false, "print-verbose-levels", "Print verbose levels", 'l'),
-    _output("", "output", "Redirect a standard output to a file", 'o'),
-
-    _selectedLevel(eo::progress),
-    _contextLevel(eo::quiet),
-    _fd(2),
-    _obuf(_fd, _contextLevel, _selectedLevel)
+void eoLogger::_init()
 {
     _standard_io_streams[&std::cout] = 1;
     _standard_io_streams[&std::clog] = 2;
@@ -67,6 +57,37 @@ eoLogger::eoLogger() :
     addLevel("xdebug", eo::xdebug);
 }
 
+eoLogger::eoLogger() :
+    std::ostream(&_obuf),
+
+    _verbose("quiet", "verbose", "Set the verbose level", 'v'),
+    _printVerboseLevels(false, "print-verbose-levels", "Print verbose levels", 'l'),
+    _output("", "output", "Redirect a standard output to a file", 'o'),
+
+    _selectedLevel(eo::progress),
+    _contextLevel(eo::quiet),
+    _fd(2),
+    _obuf(_fd, _contextLevel, _selectedLevel)
+{
+    _init();
+}
+
+eoLogger::eoLogger(eo::file file) :
+    std::ostream(&_obuf),
+
+    _verbose("quiet", "verbose", "Set the verbose level", 'v'),
+    _printVerboseLevels(false, "print-verbose-levels", "Print verbose levels", 'l'),
+    _output("", "output", "Redirect a standard output to a file", 'o'),
+
+    _selectedLevel(eo::progress),
+    _contextLevel(eo::quiet),
+    _fd(2),
+    _obuf(_fd, _contextLevel, _selectedLevel)
+{
+    _init();
+    *this << file;
+}
+
 eoLogger::~eoLogger()
 {
     if (_fd > 2) { ::close(_fd); }
@@ -99,7 +120,7 @@ void eoLogger::_createParameters( eoParser& parser )
 
 
     //------------------------------------------------------------------
-    // // we're gonna print the list of levels if -l parameter is used.
+    // we're gonna print the list of levels if -l parameter is used.
     //------------------------------------------------------------------
 
     if ( _printVerboseLevels.value() )
@@ -195,7 +216,6 @@ namespace eo
     {}
 }
 
-//! make_verbose gets level of verbose and sets it in eoLogger
 void make_verbose(eoParser& parser)
 {
     eo::log._createParameters( parser );
diff --git a/eo/src/utils/eoLogger.h b/eo/src/utils/eoLogger.h
index 50369d35c..e5faf8f34 100644
--- a/eo/src/utils/eoLogger.h
+++ b/eo/src/utils/eoLogger.h
@@ -142,12 +142,20 @@ class eoLogger : public eoObject,
 		 public std::ostream
 {
 public:
+    //! default ctor
     eoLogger();
+
+    //! overidded ctor in order to instanciate a logger with a file define in parameter
+    eoLogger(eo::file file);
+
+    //! dtor
     ~eoLogger();
 
+    //! common function for all eo objects
     virtual std::string className() const;
 
     //! Print the available levels on the standard output
+    //! enablable with the option -l
     void printLevels() const;
 
     /*! Returns the selected levels, that is the one asked by the user
@@ -163,11 +171,16 @@ public:
     inline eo::Levels getLevelContext() const { return _contextLevel; }
 
 protected:
+    //! in order to add a level of verbosity
     void addLevel(std::string name, eo::Levels level);
 
 private:
+    //! used by the function make_verbose in order to add options to specify the verbose level
     void _createParameters( eoParser& );
 
+    //! used by the set of ctors to initiate some useful variables
+    void _init();
+
 private:
     /**
      * outbuf
@@ -195,21 +208,26 @@ public:
     /**
      * operator<< used there to set a verbose mode.
      */
+    //! in order to use stream style to define the context verbose level where the following logs will be saved
     friend eoLogger& operator<<(eoLogger&, const eo::Levels);
 
     /**
      * operator<< used there to set a filename through the class file.
      */
+    //! in order to use stream style to define a file to dump instead the standart output
     friend eoLogger& operator<<(eoLogger&, eo::file);
 
     /**
      * operator<< used there to set a verbose level through the class setlevel.
      */
+    //! in order to use stream style to define manually the verbose level instead using options
     friend eoLogger& operator<<(eoLogger&, eo::setlevel);
 
     /**
      * operator<< used there to be able to use std::cout to say that we wish to redirect back the buffer to a standard output.
      */
+    //! in order to use stream style to go back to a standart output defined by STL
+    //! and to get retro-compatibility
     friend eoLogger& operator<<(eoLogger&, std::ostream&);
 
 private:
@@ -254,6 +272,7 @@ private:
 /** @example t-eoLogger.cpp
  */
 
+//! make_verbose gets level of verbose and sets it in eoLogger
 void make_verbose(eoParser&);
 
 namespace eo