Modified the ParameterContainer documentation.

src/TNL/Config/ParameterContainer.h

@@ -82,6 +82,17 @@ class ParameterContainer
    bool setParameter( const String& name,
                       const String& value );
 
+   /**
+    * \brief Checks whether the parameter \e name is given the \e value.
+    *
+    * Returns \e true if the parameter \e name is given the \e value.
+    * If the parameter does not have any value or has different value then the given
+    * \e value the method returns \e false and shows message when \e verbose is \e true.
+    *
+    * @param name Name of parameter.
+    * @param value Value of type T we want to check whether is assigned to the parameter.
+    * @param verbose Boolean value defining whether to show error message (when true) or not (when false).
+    */
    template< class T > bool getParameter( const String& name,
                                           T& value,
                                           bool verbose = true ) const