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[ A ] { label: Hello World!; }
[ B ] { label: Hello World!; }
[ C ] { label: Hello World!; }
[ D ] { label: Hello World!; }
[ middle ] { fill: #ccccff; label: /dev/fanout; }

[ Hello World ] --> [ middle ]
[ middle ] --> { start: front,0; } [ A ]
[ middle ] --> { start: front,0; } [ B ]
[ middle ] --> { start: front,0; } [ C ]
[ middle ] --> { start: front,0; } [ D ]