private void makeArgumentPane(Action a, LibAction la) {
    setLayout(new BoxLayout(getContentPane(), BoxLayout.Y_AXIS));
    JLabel lab;
    JPanel pane;
    pane = new JPanel();
    pane.setBorder(new EmptyBorder(6, 6, 0, 6));
    pane.setLayout(new BorderLayout());
    add(pane);
    if (la.actImage != null) {
      lab = new JLabel(new ImageIcon(la.actImage));
      lab.setBorder(new EmptyBorder(16, 16, 16, 20));
      pane.add(lab, BorderLayout.LINE_START);
    }

    String s = Messages.getString("ActionFrame.APPLIES"); // $NON-NLS-1$
    appliesPanel.setBorder(BorderFactory.createTitledBorder(s));
    pane.add(appliesPanel);
    if (!la.canApplyTo) appliesPanel.setVisible(false);

    List<Argument> args = a.getArguments();
    argComp = new ArgumentComponent[args.size()];
    if (args.size() > 0) {
      pane = new JPanel();
      pane.setBorder(
          BorderFactory.createCompoundBorder(
              new EmptyBorder(6, 8, 0, 8), BorderFactory.createTitledBorder("")));
      GroupLayout kvLayout = new GroupLayout(pane);
      GroupLayout.SequentialGroup hGroup, vGroup;
      GroupLayout.ParallelGroup keyGroup, valueGroup;
      hGroup = kvLayout.createSequentialGroup();
      vGroup = kvLayout.createSequentialGroup();
      keyGroup = kvLayout.createParallelGroup(Alignment.TRAILING);
      valueGroup = kvLayout.createParallelGroup();

      hGroup.addGap(4);
      hGroup.addGroup(keyGroup);
      hGroup.addGap(6);
      hGroup.addGroup(valueGroup);
      hGroup.addGap(4);

      kvLayout.setHorizontalGroup(hGroup);
      kvLayout.setVerticalGroup(vGroup);

      pane.setLayout(kvLayout);
      add(pane);

      vGroup.addGap(4);
      for (int n = 0; n < args.size(); n++) {
        argComp[n] = new ArgumentComponent(args.get(n), a.getLibAction().libArguments[n]);
        if (la.parent == null)
          lab = new JLabel(Messages.format("ActionFrame.UNKNOWN", n)); // $NON-NLS-1$
        else {
          LibArgument larg = la.libArguments[n];
          lab = new JLabel(larg.caption);
        }
        Alignment al;
        if (n == 0 && act.getLibAction().interfaceKind == LibAction.INTERFACE_ARROWS) {
          argComp[n].setEditor(new ArrowsEditor(argComp[n].getArgument().getVal()));
          al = Alignment.CENTER;
        } else {
          Component c = argComp[n].getEditor();
          c.setMaximumSize(new Dimension(240, 20));
          c.setPreferredSize(new Dimension(200, 20));
          c.setMinimumSize(new Dimension(160, 20));
          al = Alignment.BASELINE;
        }
        keyGroup.addComponent(lab);
        valueGroup.addComponent(argComp[n].getEditor());
        if (n > 0) vGroup.addGap(6);
        GroupLayout.ParallelGroup argGroup = kvLayout.createParallelGroup(al);
        argGroup.addComponent(lab).addComponent(argComp[n].getEditor());
        vGroup.addGroup(argGroup);
      }
      vGroup.addGap(4);
    }
    pane = new JPanel();
    pane.setLayout(new FlowLayout(FlowLayout.TRAILING));
    add(pane);
    if (la.allowRelative) {
      relativeBox = new JCheckBox(Messages.getString("ActionFrame.RELATIVE")); // $NON-NLS-1$
      relativeBox.setSelected(act.isRelative());
      pane.add(relativeBox);
    }
    if (la.question) {
      notBox = new JCheckBox(Messages.getString("ActionFrame.NOT")); // $NON-NLS-1$
      notBox.setSelected(act.isNot());
      pane.add(notBox);
    }

    pane = new JPanel();
    pane.setLayout(new GridLayout(1, 2, 8, 0));
    pane.setBorder(new EmptyBorder(0, 8, 8, 8));
    add(pane);
    s = Messages.getString("ActionFrame.SAVE"); // $NON-NLS-1$
    save = new JButton(s, LGM.getIconForKey("ActionFrame.SAVE")); // $NON-NLS-1$
    save.addActionListener(this);
    pane.add(save);
    s = Messages.getString("ActionFrame.DISCARD"); // $NON-NLS-1$
    discard = new JButton(s, LGM.getIconForKey("ActionFrame.DISCARD")); // $NON-NLS-1$
    discard.addActionListener(this);
    pane.add(discard);
  }