diff --git a/AlgebraicDataflowArchitectureModel/src/application/editor/Stage.java b/AlgebraicDataflowArchitectureModel/src/application/editor/Stage.java
index e328832..be708bc 100644
--- a/AlgebraicDataflowArchitectureModel/src/application/editor/Stage.java
+++ b/AlgebraicDataflowArchitectureModel/src/application/editor/Stage.java
@@ -15,11 +15,6 @@
     protected mxGraphComponent graphComponent;
     protected mxGraph graph;
 
-    public static final int NODE_LAYER = 0;
-    public static final int DATA_FLOW_LAYER = 0;
-    public static final int PUSH_FLOW_LAYER = 1;
-    public static final int PULL_FLOW_LAYER = 2;
-
     public Stage(mxGraphComponent graphComponent) {
         this.graphComponent = graphComponent;
         this.graph = graphComponent.getGraph();
@@ -35,19 +30,6 @@
 
     public abstract boolean canChangeFrom(Stage prevStage);
 
-    public void setEnabledForLayer(final int layerNo, final boolean isEnable) {
-        // TODO Implement
-    }
-
-    /**
-     * Showing layers are specified number of layers.
-     *
-     * @param argsOfLayers you want to show numbers of layers.
-     */
-    public void showOnlyLayer(final int... argsOfLayers) {
-        // TODO Implement
-    }
-
     public DataTransferModel getModel() {
         return model;
     }