public EnvelopeWidget(String label, IPatch patch, Node[] options) { this(label, patch, options, 0, 0);
public EnvelopeWidget(String label, IPatch patch, Node[] nodes, int xpad, int ypad) { super(label, patch, null, null); this.nodes = nodes; xpadding = xpad; ypadding = ypad;  createWidgets(); layoutWidgets();
    public EnvelopeWidget(String label, IPatch patch, Node[] options) {	this(label, patch, options, 0, 0);    }