diff --git a/documentation/src/drawing.dox b/documentation/src/drawing.dox
index 26c615f03..a803507cd 100644
--- a/documentation/src/drawing.dox
+++ b/documentation/src/drawing.dox
@@ -507,6 +507,10 @@ box. The two angles are measured in degrees counter-clockwise from
 3'oclock and are the starting and ending angle of the arc, \p a2
 must be greater or equal to \p a1.
 
+\par
+\image html  fl_pie_arc_diagram.png "fl_pie() and fl_arc()"
+\image latex fl_pie_arc_diagram.png "fl_pie() and fl_arc()" width=6cm
+
 \par
 \p %fl_arc() draws a series of lines to approximate the arc.
 Notice that the integer version of \p %fl_arc() has a different
diff --git a/documentation/src/fl_pie_arc_diagram.png b/documentation/src/fl_pie_arc_diagram.png
new file mode 100644
index 000000000..de7ece5d5
Binary files /dev/null and b/documentation/src/fl_pie_arc_diagram.png differ