diff --git a/src/tools/drawTools/vtoolsinglepoint.h b/src/tools/drawTools/vtoolsinglepoint.h
index a5027f757..bb0fb187e 100644
--- a/src/tools/drawTools/vtoolsinglepoint.h
+++ b/src/tools/drawTools/vtoolsinglepoint.h
@@ -33,7 +33,7 @@
 #include "../../dialogs/dialogsinglepoint.h"
 
 /**
- * @brief The VToolSinglePoint class class tool for creation pattern base point. Obly base point can move. All object
+ * @brief The VToolSinglePoint class tool for creation pattern base point. Obly base point can move. All object
  * pattern peace depend on base point.
  */
 class VToolSinglePoint : public VToolPoint
diff --git a/src/tools/drawTools/vtoolspline.h b/src/tools/drawTools/vtoolspline.h
index 06e627069..fbb918ba8 100644
--- a/src/tools/drawTools/vtoolspline.h
+++ b/src/tools/drawTools/vtoolspline.h
@@ -36,19 +36,19 @@
 #include "../../geometry/vsplinepath.h"
 
 /**
- * @brief The VToolSpline class
+ * @brief The VToolSpline class tool for creation spline. I mean bezier curve.
  */
 class VToolSpline:public VDrawTool, public QGraphicsPathItem
 {
     Q_OBJECT
 public:
                  /**
-                  * @brief VToolSpline
-                  * @param doc dom document container
-                  * @param data container with variables
-                  * @param id object id in container
+                  * @brief VToolSpline constructor.
+                  * @param doc dom document container.
+                  * @param data container with variables.
+                  * @param id object id in container.
                   * @param typeCreation way we create this tool.
-                  * @param parent parent object
+                  * @param parent parent object.
                   */
                  VToolSpline (VDomDocument *doc, VContainer *data, qint64 id, const Tool::Sources &typeCreation,
                               QGraphicsItem * parent = 0 );
@@ -57,27 +57,27 @@ public:
      */
     virtual void setDialog();
     /**
-     * @brief Create help create tool
-     * @param dialog
+     * @brief Create help create tool from GUI.
+     * @param dialog dialog.
      * @param scene pointer to scene.
-     * @param doc dom document container
-     * @param data container with variables
+     * @param doc dom document container.
+     * @param data container with variables.
      */
     static void  Create(QSharedPointer<DialogSpline> &dialog, VMainGraphicsScene  *scene, VDomDocument *doc,
                         VContainer *data);
     /**
-     * @brief Create help create tool
+     * @brief Create help create tool.
      * @param _id tool id, 0 if tool doesn't exist yet.
-     * @param p1
-     * @param p4
-     * @param kAsm1
-     * @param kAsm2
-     * @param angle1
-     * @param angle2
-     * @param kCurve
+     * @param p1 id first spline point.
+     * @param p4 id last spline point.
+     * @param kAsm1 coefficient of length first control line.
+     * @param kAsm2 coefficient of length second control line.
+     * @param angle1 angle from first point to first control point.
+     * @param angle2 angle from second point to second control point.
+     * @param kCurve coefficient of curvature spline.
      * @param scene pointer to scene.
-     * @param doc dom document container
-     * @param data container with variables
+     * @param doc dom document container.
+     * @param data container with variables.
      * @param parse parser file mode.
      * @param typeCreation way we create this tool.
      */
@@ -85,27 +85,21 @@ public:
                         const qreal kAsm2, const qreal &angle1, const qreal &angle2, const qreal &kCurve,
                         VMainGraphicsScene  *scene, VDomDocument *doc, VContainer *data,
                         const Document::Documents &parse, const Tool::Sources &typeCreation);
-    /**
-     * @brief TagName
-     */
     static const QString TagName;
-    /**
-     * @brief ToolType
-     */
     static const QString ToolType;
 signals:
     /**
-     * @brief RefreshLine
-     * @param indexSpline
-     * @param position
-     * @param controlPoint
-     * @param splinePoint
+     * @brief RefreshLine refresh control line.
+     * @param indexSpline position spline in spline list.
+     * @param position position point in spline.
+     * @param controlPoint new position control point.
+     * @param splinePoint new position spline point.
      */
     void             RefreshLine ( const qint32 &indexSpline, SplinePoint::Position position, const QPointF &controlPoint,
                                    const QPointF &splinePoint );
     /**
-     * @brief setEnabledPoint
-     * @param enable
+     * @brief setEnabledPoint disable control points.
+     * @param enable enable or diasable points.
      */
     void             setEnabledPoint ( bool enable );
 public slots:
@@ -115,14 +109,14 @@ public slots:
     virtual void     FullUpdateFromFile ();
     /**
      * @brief FullUpdateFromGui  refresh tool data from change options.
-     * @param result
+     * @param result result working dialog.
      */
     virtual void     FullUpdateFromGui ( int result );
     /**
-     * @brief ControlPointChangePosition
-     * @param indexSpline
-     * @param position
-     * @param pos
+     * @brief ControlPointChangePosition handle change position control point.
+     * @param indexSpline position spline in spline list.
+     * @param position position point in spline.
+     * @param pos new position.
      */
     void             ControlPointChangePosition (const qint32 &indexSpline, const SplinePoint::Position &position,
                                                  const QPointF &pos);
@@ -132,10 +126,10 @@ public slots:
      */
     virtual void     ChangedActivDraw ( const QString &newName );
     /**
-     * @brief ShowTool  highlight tool.
+     * @brief ShowTool highlight tool.
      * @param id object id in container
-     * @param color
-     * @param enable
+     * @param color highlight color.
+     * @param enable enable or disable highlight.
      */
     virtual void     ShowTool(qint64 id, Qt::GlobalColor color, bool enable);
     /**
@@ -146,7 +140,7 @@ public slots:
 protected:
     /**
      * @brief contextMenuEvent handle context menu events.
-     * @param event
+     * @param event context menu event.
      */
     virtual void     contextMenuEvent ( QGraphicsSceneContextMenuEvent * event );
     /**
@@ -159,32 +153,42 @@ protected:
     virtual void     RefreshDataInFile();
     /**
      * @brief mouseReleaseEvent  handle mouse release events.
-     * @param event
+     * @param event context menu event.
      */
     virtual void     mouseReleaseEvent ( QGraphicsSceneMouseEvent * event );
     /**
      * @brief hoverMoveEvent handle hover move events.
-     * @param event
+     * @param event hover move event.
      */
     virtual void     hoverMoveEvent ( QGraphicsSceneHoverEvent * event );
     /**
      * @brief hoverLeaveEvent handle hover leave events.
-     * @param event
+     * @param event hover leave event.
      */
     virtual void     hoverLeaveEvent ( QGraphicsSceneHoverEvent * event );
     /**
      * @brief RemoveReferens decrement value of reference.
      */
     virtual void     RemoveReferens();
+    /**
+     * @brief itemChange hadle item change.
+     * @param change change.
+     * @param value value.
+     * @return value.
+     */
     virtual QVariant itemChange ( GraphicsItemChange change, const QVariant &value );
+    /**
+     * @brief keyReleaseEvent handle key release events.
+     * @param event key release event.
+     */
     virtual void     keyReleaseEvent(QKeyEvent * event);
 private:
     /**
-     * @brief dialogSpline
+     * @brief dialogSpline dialog.
      */
     QSharedPointer<DialogSpline>   dialogSpline;
     /**
-     * @brief controlPoints
+     * @brief controlPoints list pointers of control points.
      */
     QVector<VControlPointSpline *> controlPoints;
     /**