text.mod/graphviz.mod/graphviz/tests/graphs/style.gv

digraph G {
   b [style=bold]
   c [style=dashed]
   d [style=dotted]
   e [style="setlinewidth(3)"]
   f [style=invis]
   g [style=solid]
   a -> b [style=bold]
   a -> c [style=dashed]
   a -> d [style=dotted]
   a -> e [style="setlinewidth(3)"]
   a -> f [style=invis]
   a -> g [style=solid]
   B [shape=box,style="bold,rounded"]
   C [shape=diamond,style="dashed,rounded"]
   D [style="dotted,rounded"]
   E [style="setlinewidth(3),rounded"]
   BD [style="bold,rounded,diagonals"]
   CD [shape=diamond, style="dashed,rounded,diagonals"]
   DD [style="dotted,rounded,diagonals"]
   ED [style="setlinewidth(3),rounded,diagonals"]
   BFD [style="filled, bold,rounded,diagonals"]
   CFD [style="filled, dashed,rounded,diagonals"]
   DFD [style="filled, dotted,rounded,diagonals"]
   EFD [style="filled, setlinewidth(3),rounded,diagonals"]
   B -> BD -> BFD
   C -> CD -> CFD
   D -> DD -> DFD
   E -> ED -> EFD
   subgraph clusterA {
      style=rounded
      1 -> {2 3}
   }

  
}