graph {
  border: 1px solid black;
  background: oldlace;
  label: My sample graph;
  }
edge { label-color: green; color: blue; style: invisible; }

[ One ] { fill: seagreen; color: white; } -- label --> [ Two ] { shape: triangle; }
[ One ] => [ Three ]
[ Five ] { fill: maroon; color: yellow; } <=> [ Three ]
[ One ] .. Test\n label ..> [ Four ]
[ Three ] <.. Test label ..> [ Six ]
[ Five ] -  Test label - > { label-color: darkslategrey; color: red; } [ Seven ]
[ Seven ] -- [ Eight ]
[ Five ] --> [ Eight ]
[ Five ] --> [ Seven ]