Create a new node
In:
Alias for #<<
Create an edge between the current node and the node oNode
Get the value of the node attribut xAttrName
Set value xAttrValue to the node attribut xAttrName
Get the node name
Set node attributs
Example :
n = graph.add_node( ... ) ... n.set { |_n| _n.color = "blue" _n.fontcolor = "red" }
[Validate]