[This currently has absolutly no useful function. (instruction below)]
Left-click and drag to move nodes. Right-click on empty space to make a new node. Right-click and drag between nodes to make new connections. Middle-click on a node to delete it and its connections. (You can hold down the 'n' key to simulate a right-click or 'd' to simulate a middle click.)
Source code: Node_Map
Built with Processing.