diff --git a/doc/dot/jkqtplotter_graphhirarchy.gv b/doc/dot/jkqtplotter_graphhirarchy.gv
deleted file mode 100644
index b95b4faf9c..0000000000
--- a/doc/dot/jkqtplotter_graphhirarchy.gv
+++ /dev/null
@@ -1,130 +0,0 @@
-digraph
-{
- // LATEX_PDF_SIZE
-  bgcolor="transparent";
-  edge [fontname="FreeSans",fontsize="12",labelfontname="FreeSans",labelfontsize="12"];
-  node [fontname="FreeSans",fontsize="12",shape=record];
-  rankdir="LR";
-
-  {
-    rank=same;
-    JKQTPPlotElement [URL="\link JKQTPPlotElement"];
-    noteJKQTPPlotElement [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\nelements drawn\nonto a plot"];
-    JKQTPPlotElement -> noteJKQTPPlotElement [style=dashed,arrowhead=none];
-  }
-
-  {
-    rank=same;
-    JKQTPGraph [URL="\link JKQTPPlotElement"];
-    noteJKQTPGraph [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\nactual graphs"];
-    JKQTPGraph -> noteJKQTPGraph [style=dashed,arrowhead=none];
-	
-    JKQTPGeometricPlotElement [URL="\link JKQTPGeometricPlotElement"];
-    noteJKQTPGeometricPlotElement [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\nnon-graph elements,\ne.g. geometric elements"];
-    JKQTPGeometricPlotElement -> noteJKQTPGeometricPlotElement [style=dashed,arrowhead=none];
-	
-    JKQTPPlotAnnotationElement [URL="\link JKQTPPlotAnnotationElement"];
-    noteJKQTPPlotAnnotationElement [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\ngraph annotation elements,\ne.g. text, symbols, ranges ..."];
-    JKQTPPlotAnnotationElement -> noteJKQTPPlotAnnotationElement [style=dashed,arrowhead=none];
-  }
-
-
-  {
-    rank=same;
-
-    JKQTPXYGraph [URL="\link JKQTPXYGraph"]
-    noteJKQTPXYGraph [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\ngraphs based on\n (x,y) data pairs"];
-    JKQTPXYGraph -> noteJKQTPXYGraph [style=dashed,arrowhead=none];
-	
-    JKQTPSingleColumnGraph [URL="\link JKQTPSingleColumnGraph"]
-    noteJKQTPSingleColumnGraph [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\ngraphs based on only\n a single column of data"];
-    JKQTPSingleColumnGraph -> noteJKQTPSingleColumnGraph [style=dashed,arrowhead=none];
-	
-    JKQTPImageBase [URL="\link JKQTPImageBase"]
-    noteJKQTPImageBase [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\ngraphs that represent \n2D images/matrices"];
-    JKQTPImageBase -> noteJKQTPImageBase [style=dashed,arrowhead=none];
-  }
-
-  {
-    rank=same;
-
-    JKQTPXYYGraph [URL="\link JKQTPXYYGraph"]
-    noteJKQTPXYYGraph [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\ngraphs based on\n (x, y1, y2) data tripels"];
-    JKQTPXYYGraph -> noteJKQTPXYYGraph [style=dashed,arrowhead=none];
-
-    JKQTPXXYGraph [URL="\link JKQTPXXYGraph"]
-    noteJKQTPXXYGraph [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\ngraphs based on\n (x1, x2, y) data tripels"];
-    JKQTPXXYGraph -> noteJKQTPXXYGraph [style=dashed,arrowhead=none];
-
-    JKQTPXYBaselineGraph [URL="\link JKQTPXYBaselineGraph"]
-    noteJJKQTPXYBaselineGraph [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\ngraphs based on\n (x,y) data pairs and a baseline"];
-    JKQTPXYBaselineGraph -> noteJJKQTPXYBaselineGraph [style=dashed,arrowhead=none];
-	
-    JKQTPEvaluatedFunctionGraphBase [URL="\link JKQTPEvaluatedFunctionGraphBase"]
-    noteJKQTPEvaluatedFunctionGraphBase [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\ngraphs that represent \ndynamically evaluated functions"];
-    JKQTPEvaluatedFunctionGraphBase -> noteJKQTPEvaluatedFunctionGraphBase [style=dashed,arrowhead=none];
-	
-    JKQTPMathImageBase [URL="\link JKQTPMathImageBase"]
-    noteJKQTPMathImageBase [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\ndata-based images"];
-    JKQTPMathImageBase -> noteJKQTPMathImageBase [style=dashed,arrowhead=none];
-  }  
-
-  {
-    rank=same;
-
-    JKQTPBarGraphBase [URL="\link JKQTPBarGraphBase"]
-    noteJKQTPBarGraphBase [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\nbarcharts"];
-    JKQTPBarGraphBase -> noteJKQTPBarGraphBase [style=dashed,arrowhead=none];
-
-    JKQTPFilledCurveGraphBase [URL="\link JKQTPFilledCurveGraphBase"]
-    noteJKQTPFilledCurveGraphBase [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\nfilled graphs"];
-    JKQTPFilledCurveGraphBase -> noteJKQTPFilledCurveGraphBase [style=dashed,arrowhead=none];
-
-    JKQTPImpulsesGraphBase [URL="\link JKQTPImpulsesGraphBase"]
-    noteJKQTPImpulsesGraphBase [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\nimpulse graphs"];
-    JKQTPImpulsesGraphBase -> noteJKQTPImpulsesGraphBase [style=dashed,arrowhead=none];
-	
-    JKQTPSpecialLineGraphBase [URL="\link JKQTPSpecialLineGraphBase"]
-    noteJKQTPSpecialLineGraphBase [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\nspecial line graphs"];
-    JKQTPSpecialLineGraphBase -> noteJKQTPSpecialLineGraphBase [style=dashed,arrowhead=none];
-	
-    JKQTPBoxplotGraphBase [URL="\link JKQTPBoxplotGraphBase"]
-    noteJKQTPBoxplotGraphBase [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\ngraphs that represent \na set of boxplots"];
-    JKQTPBoxplotGraphBase -> noteJKQTPBoxplotGraphBase [style=dashed,arrowhead=none];
-	
-    JKQTPRangeBase [URL="\link JKQTPRangeBase"];
-    noteJKQTPRangeBase [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\nrange annotations"];
-    JKQTPRangeBase -> noteJKQTPRangeBase [style=dashed,arrowhead=none];
-	
-    JKQTPBoxplotElementBase [URL="\link JKQTPBoxplotElementBase"]
-    noteJKQTPBoxplotElementBase [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\ngraphs that represent \na single boxplot"];
-    JKQTPBoxplotElementBase -> noteJKQTPBoxplotElementBase [style=dashed,arrowhead=none];
-	
-    JKQTPViolinplotElementBase [URL="\link JKQTPViolinplotElementBase"]
-    noteJKQTPViolinplotElementBase [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\ngraphs that represent \na single violin plot"];
-    JKQTPViolinplotElementBase -> noteJKQTPViolinplotElementBase [style=dashed,arrowhead=none];
-  }  
-	
-  JKQTPPlotElement -> JKQTPGraph
-  JKQTPPlotElement -> JKQTPGeometricPlotElement
-  JKQTPPlotElement -> JKQTPPlotAnnotationElement
-  JKQTPPlotElement -> JKQTPRangeBase
-  JKQTPPlotElement -> JKQTPBoxplotElementBase
-  JKQTPPlotElement -> JKQTPViolinplotElementBase
-
-  JKQTPGraph -> JKQTPXYGraph
-  JKQTPGraph -> JKQTPSingleColumnGraph
-  JKQTPGraph -> JKQTPImageBase -> JKQTPMathImageBase
-  JKQTPGraph -> JKQTPEvaluatedFunctionGraphBase
-  JKQTPGraph -> JKQTPBoxplotGraphBase
-
-  JKQTPXYGraph -> JKQTPXYYGraph
-  JKQTPXYGraph -> JKQTPXXYGraph
-  JKQTPXYGraph -> JKQTPXYBaselineGraph
-  
-  JKQTPXYBaselineGraph -> JKQTPBarGraphBase
-  JKQTPXYBaselineGraph -> JKQTPFilledCurveGraphBase
-  JKQTPXYBaselineGraph -> JKQTPImpulsesGraphBase
-  JKQTPXYBaselineGraph -> JKQTPSpecialLineGraphBase
-
-}
diff --git a/doc/dox/jkqtplotter.dox b/doc/dox/jkqtplotter.dox
index 57d613dd30..84e9780849 100644
--- a/doc/dox/jkqtplotter.dox
+++ b/doc/dox/jkqtplotter.dox
@@ -119,7 +119,7 @@ digraph
  // LATEX_PDF_SIZE
   bgcolor="transparent";
   edge [fontname="FreeSans",fontsize="12",labelfontname="FreeSans",labelfontsize="12"];
-  node [fontname="FreeSans",fontsize="12",shape=record];
+  node [fontname="FreeSans",fontsize="12"];
   rankdir="LR";
 
   {