diff --git a/Qt_widget/doc_tex/Qt_widget/qt_widget.tex b/Qt_widget/doc_tex/Qt_widget/qt_widget.tex
index da54a7780cc..6270e6ed271 100644
--- a/Qt_widget/doc_tex/Qt_widget/qt_widget.tex
+++ b/Qt_widget/doc_tex/Qt_widget/qt_widget.tex
@@ -107,7 +107,7 @@ The first example draws a red segment on an orange background.
 \ccIncludeExampleCode{Qt_widget/hellosegment.cpp}
 
 We follow the \qt\ naming conventions for material properties, for
-example, the {\tt CGAL::BackgroundColor} above.
+example, the \ccc{CGAL::BackgroundColor} above.
 
 All the drawing code should be put between \ccStyle{Qt\_Widget}'s lock() and
 unlock() functions. See the manual reference pages of
@@ -126,7 +126,7 @@ whenever necessary. This is the topic of the next example.
 \subsection{Example: Signals and Slots}
 
 This example is slightly more involved and uses  the
-signal/slots mechanism of \qt\ .
+signal/slots mechanism of \qt.
 
 The main widget shows a
 Delaunay triangulation. Every time the mouse button is pressed over 
diff --git a/Qt_widget/doc_tex/Qt_widget_ref/Manipulators.tex b/Qt_widget/doc_tex/Qt_widget_ref/Manipulators.tex
index 2a4b3088829..6091666eeef 100644
--- a/Qt_widget/doc_tex/Qt_widget_ref/Manipulators.tex
+++ b/Qt_widget/doc_tex/Qt_widget_ref/Manipulators.tex
@@ -10,51 +10,39 @@
 
 % +-----------------------------------------------------+
 
-\ccHeading{Manipulators for Qt\_widget}
+\ccHeading{Manipulators for \ccc{Qt_widget}}
 
 
-A \ccc{manipulator} is an object which can be inserted in the \ccc{Qt_widget}
-, via the operator \ccc{<<}, to change the context for further
-drawing.
+A \ccc{manipulator} is an object which can be inserted in the \ccc{Qt_widget},
+via the operator \ccc{<<}, to change the context for further drawing.
 
 Here, we simply document the use of these operators which is all the
 user needs to know to modify the state of a stream.
 
-\ccFunction{Qt_widget& operator<<(Qt_widget& win, BackgroundColor(const
-Color& c));}{Sets the color used for background color.}
+\ccFunction{Qt_widget& operator<<(Qt_widget& win, BackgroundColor);}
+{Sets the color used for background color.}
 \ccGlue
 
-\ccFunction{Qt_widget& operator<<(Qt_widget& win, FillColor(const
-Color& c));}{Sets the color used for filling the objects.}
+\ccFunction{Qt_widget& operator<<(Qt_widget& win, FillColor);}
+{Sets the color used for filling the objects.}
 \ccGlue
 
-\ccFunction{Qt_widget& operator<<(Qt_widget& win, LineWidth(const
-unsigned int i));}{Sets the width of the line for drawing objects.}
+\ccFunction{Qt_widget& operator<<(Qt_widget& win, LineWidth);}
+{Sets the width of the line for drawing objects.}
 \ccGlue
 
-\ccFunction{Qt_widget& operator<<(Qt_widget& win, PointSize(const
-unsigned int i));}{Sets the size of the points.}
+\ccFunction{Qt_widget& operator<<(Qt_widget& win, PointSize);}
+{Sets the size of the points.}
 \ccGlue
 
-\ccFunction{Qt_widget& operator<<(Qt_widget& win, noFill);}{Sets the state 
-of Qt\_widget concerning filling the objects to be false.}
+\ccFunction{Qt_widget& operator<<(Qt_widget& win, noFill);}
+{Sets the state of \ccc{Qt_widget} concerning filling the objects to be false.}
 \ccGlue
 
-\ccFunction{Qt_widget& operator<<(Qt_widget& win, const Color& c);}{Sets the 
-color used as the Qt\_widget fillColor.}
+\ccFunction{Qt_widget& operator<<(Qt_widget& win, const Color& c);}
+{Sets the color used as the \ccc{Qt_widget} fillColor.}
 \ccGlue
 
-\ccFunction{Qt_widget& operator<<(Qt_widget& win, const PointStyle& ps);}{Sets
- the point style for \ccc{Qt_widget}.}
+\ccFunction{Qt_widget& operator<<(Qt_widget& win, const PointStyle& ps);}
+{Sets the point style for \ccc{Qt_widget}.}
 \ccGlue
-
-
-% +-----------------------------------------------------+
-% EOF
-
-
-
-
-
-
-