Many thanks!
Cool : works like a charm! Will added in few times http://moiscript.weebly.com/node.html#addanodeselected

function loadDefaultNodes()
{
var node_output = LiteGraph.createNode("Basic/Output");
node_output.pos = [800,100];
graph.add(node_output);
var node_selected = LiteGraph.createNode("Objects/Selected");
node_selected.pos = [400,100];
graph.add(node_selected);
}