small improvements of the reference manual pages

GraphicsView/doc_tex/GraphicsView_ref/Converter.tex

@@ -4,7 +4,7 @@
 \ccDefinition
 An object of type \ccRefName\ converts 2D \cgal\ kernel objects to their equivalent 
 objects in \qt, and the other way round. Note that some objects have no equivalent.
-For exmaple the \ccc{CGAL::Circle_2<K>} cannot be converted to something in Qt,
+For example the \ccc{CGAL::Circle_2<K>} cannot be converted to something in Qt,
 and the unbounded objects \ccc{CGAL::Ray_2<K>} and \ccc{CGAL::Line_2<K>} are clipped.
 
 \ccInclude{CGAL/Qt/Converter.h}

GraphicsView/doc_tex/GraphicsView_ref/GraphicsViewCircleInput.tex

@@ -5,7 +5,8 @@
 An object of type \ccRefName\ creates a circle, defined by either
 center and radius, or two or three points on the circle. A new 
 vertex is inserted every time the left mouse button is pressed.
-The \ccc{Escape} key removes the last entered point.
+The \ccc{Del} key removes the last entered point. The \ccc{Esc} 
+key removes all entered points.
 
 
 \ccInclude{CGAL/Qt/GraphicsViewCircleInput.h}
@@ -24,7 +25,7 @@ The template parameter of \ccRefName\ must be a \cgal\ \ccc{Kernel}.
 \ccSetTwoColumns{GraphicsViewCircleInput}{}
 
 \ccConstructor{GraphicsViewCircleInput<T>(QGraphicsScene* s, int pointsOnCircle = 1);}
-{\ccc{s} is the scene where we want to draw the circle. \ccc{pointsOnCircle} is the
+{\ccc{s} is the scene where we want to enter the circle. \ccc{pointsOnCircle} is the
   number of points on the circle to generate.}
 
 \ccMethod{void generate(Object o);}{The object \ccc{o} contains a \ccc{std::pair<K::Point_2, K::FT>}

GraphicsView/doc_tex/GraphicsView_ref/GraphicsViewNavigation.tex

@@ -6,6 +6,7 @@ An object of type \ccRefName\ can be added as event filter to a \ccc{Qt::QGraphi
 
 Dragging the left mouse button while holding the 'Ctrl' key defines a zoom rectangle.
 Dragging the right mouse button while holding the 'Ctrl' key translates the scene.
+'Ctrl-Shift' and a click of the right mouse button puts what is under the mouse in the center.
 
 \ccInclude{CGAL/Qt/GraphicsViewNavigation.h}
 
@@ -14,7 +15,7 @@ Dragging the right mouse button while holding the 'Ctrl' key translates the scen
 
 \ccOperations
 
-\ccMethod{bool eventFilter(QObject *obj, QEvent *event);}{.}
+\ccMethod{bool eventFilter(QObject *obj, QEvent *event);}{The event filter.}
 
 \ccHeading{Signals}
 

GraphicsView/doc_tex/GraphicsView_ref/GraphicsViewPolylineInput.tex

@@ -5,8 +5,9 @@
 An object of type \ccRefName\ creates a list of points. A new 
 vertex is inserted every time the left mouse button is pressed.
 The list of points is emitted on a right click or when the number of
-points specified in the constructor is reached. You can use the \ccc{Escape}
-key if you want to remove your last entered point in the polygon.
+points specified in the constructor is reached. You can use the 'Del'
+or 'Backspace' key if you want to remove your last entered point in the polygon,
+and the 'Esc' key if you want to remove all points.
 
 The tool can serve at the same time for entering a single point,
 a polyline with a given number of points, and for open and closed

GraphicsView/doc_tex/GraphicsView_ref/PainterOstream.tex

@@ -33,9 +33,9 @@ This is typically the visible area of the widget where the unbounded object is d
 
 \ccMethod{PainterOstream<K> operator<<(Bbox_2);}{Draws an iso rectangle.}
 
-\ccMethod{PainterOstream<K> operator<<(QPen);}{Sets the pen which is used in the next paint operation.}
+\ccMethod{PainterOstream<K> operator<<(QPen);}{Sets the pen which is used in the next paint operations.}
 
-\ccMethod{PainterOstream<K> operator<<(QBrush);}{Sets the brush which is used in the next paint operation.}
+\ccMethod{PainterOstream<K> operator<<(QBrush);}{Sets the brush which is used in the next paint operations.}
 
 \end{ccRefClass}
 

GraphicsView/doc_tex/GraphicsView_ref/TriangulationGraphicsItem.tex

@@ -29,11 +29,11 @@ The template parameter of \ccRefName\ must be a
 \ccMethod{QPen edgesPen()() const;}{Get the pen that is used to draw edges.}
 \ccMethod{void setEdgesPen()(const QPen& p);}{Set the pen that is used to draw edges.}
 
-\ccMethod{bool drawVertices();}{.}
-\ccMethod{bool setDrawVertices(bool b);}{.}
+\ccMethod{bool drawVertices();}{Property to switch drawing of vertices on or off.}
+\ccMethod{bool setDrawVertices(bool b);}{Set the property.}
 
-\ccMethod{bool drawEdges();}{.}
-\ccMethod{bool setDrawEdges(bool b);}{.}
+\ccMethod{bool drawEdges();}{Property to switch drawing of edges on or off.}
+\ccMethod{bool setDrawEdges(bool b);}{Set the property.}
 \end{ccRefClass}
 
 

GraphicsView/doc_tex/GraphicsView_ref/VoronoiGraphicsItem.tex

@@ -26,8 +26,8 @@ Delaunay triangulation \ccc{dt}.}
 \ccMethod{QPen edgesPen()() const;}{Get the pen that is used to draw edges.}
 \ccMethod{void setEdgesPen()(const QPen& p);}{Set the pen that is used to draw edges.}
 
-\ccMethod{bool drawEdges();}{.}
-\ccMethod{bool setDrawEdges(bool b);}{.}
+\ccMethod{bool drawEdges();}{Property to switch drawing of edges on or off.}
+\ccMethod{bool setDrawEdges(bool b);}{Set the property.}
 \end{ccRefClass}