'digraph Perl {
 graph [ label="Macro demo 1 - Non-cluster sub-graphs" rankdir="TB" ]
 edge [ color="grey" ]

 subgraph "One" {
  graph [ label="One" ]
  node [ color="magenta" shape="diamond" ]
  "Chadstone" [ shape="hexagon" ]
  "Waverley" [ color="orange" ]
  "Chadstone" -> "Waverley"
 }

 subgraph "Two" {
  graph [ label="Two" ]
  node [ color="magenta" shape="diamond" ]
  "Hughesdale" [ shape="hexagon" ]
  "Notting Hill" [ color="orange" ]
  "Hughesdale" -> "Notting Hill"
 }
}
'
