catLayerMan.addExample(new LayerOrderPanel(), null);
// Features:
Category catFeature = new Category("Feature Manipulation");
catList.add(catFeature);
catFeature.addExample(new FeatureSelectionPanel(), null);
// Drawing:
Category catDrawing = new Category("Custom Drawing");
catList.add(catDrawing);
catDrawing.addExample(new ScreenSpaceRenderingPanel(), null);