Page History

{
    id: "root",  // root node
    children: [{
        id: "n1",  // node n1
        labels: [ { text: "n1" } ],
        width: 100, 
        height: 100,
    },{
        id: "n2",  // node n2
        labels: [ { text: "n2" } ],
        width: 100,
        height: 50,
        children: [{  
            id: "n3",  // node n3 (child of n2)
            labels: [ { text: "n3" } ],
            width: 20,
            height: 20
        },{
            id: "n4",  // node n4 (child of n3)
            labels: [ { text: "n4" } ],
            width: 20,
            height: 20}
        ],
        edges: [{
            id: "e4",  // edge n3 -> n4
            source: "n3",
            target: "n4"
        }]
    }],
    edges: [{
        id: "e1",  // edge n1 -> n2
        source: "n1",
        target: "n2"
    }]
}