private JMenu createToolsMenu() {
JMenu toolsMenu = new JMenu("Tools");
toolsMenu.setMnemonic(KeyEvent.VK_T);
this.tsViewerItem = new JMenuItem("View Typesystem", KeyEvent.VK_T);
this.tsViewerItem.addActionListener(new ShowTypesystemHandler(this));
this.tsViewerItem.setEnabled(false);
toolsMenu.add(this.tsViewerItem);
this.allAnnotationViewerItem = new JMenuItem("Show Selected Annotations", KeyEvent.VK_A);
this.allAnnotationViewerItem.addActionListener(new ShowAnnotatedTextHandler(this));
toolsMenu.add(this.allAnnotationViewerItem);