digraph UML {
  rankdir  = BT
     
  fontname = "Courier New"
  fontsize = 10
     
  node [ fontname = "Courier New", fontsize = 10, shape = "record" ];
  edge [ fontname = "Courier New", fontsize = 10 ];
     
   style_t->widget_t[arrowhead=none];
   style_factory_t->widget_t[arrowhead=none];
   subgraph cluster_0{
     style_factory_t->style_t[constraint=false arrowhead=vee];
   };
   
   subgraph cluster_1{
     style_const_t -> style_mutable_t[constraint=false arrowhead=ediamond]
   };
   style_const_t -> style_t[arrowhead=empty style=dashed]
   style_mutable_t -> style_t[arrowhead=empty style=dashed]
   theme_t -> style_const_t[arrowhead=none]
}