}
private JToolBar prepareExplorationToolBar() {
// create the exploration buttons
StartCompletionUIAction startAction = new StartCompletionUIAction();
startAction.setViewComponent(this);
startButton = prepareButton(startAction, GUIConstants.START_BUTTON_TOOLTIP,
GUIConstants.START_BUTTON_TEXT);
StopCompletionUIAction stopAction = new StopCompletionUIAction();
stopAction.setViewComponent(this);