diff --git a/AlgebraicDataflowArchitectureModel/src/application/editor/stages/ControlFlowModelingStage.java b/AlgebraicDataflowArchitectureModel/src/application/editor/stages/ControlFlowModelingStage.java
index a43e0ca..75aa05f 100644
--- a/AlgebraicDataflowArchitectureModel/src/application/editor/stages/ControlFlowModelingStage.java
+++ b/AlgebraicDataflowArchitectureModel/src/application/editor/stages/ControlFlowModelingStage.java
@@ -96,7 +96,7 @@
 			controlFlowGraph = new ControlFlowGraph(dataFlowGraph, model);
 			
 			clearControlFlowGraphCells(graph);
-			graph = constructGraph(graph, controlFlowGraph);
+			graph = constructGraph(graph);
 		}
 	}
 	
@@ -519,12 +519,11 @@
 	}
 	
 	/**
-	 * GUI上のグラフを生成する
+	 * Construct a control-flow graph on an mxGraph
 	 *
-	 * @param graph            初期化対象のグラフ
-	 * @param controlFlowGraph The ControlFlowGraph instance
+	 * @param graph The mxGraph to be constructed
 	 */
-	private mxGraph constructGraph(mxGraph graph, ControlFlowGraph controlFlowGraph) {
+	private mxGraph constructGraph(mxGraph graph) {
 		showLayers(PUSH_FLOW_LAYER, PULL_FLOW_LAYER);
 		
 		graph.getModel().beginUpdate();
@@ -546,9 +545,9 @@
 	}
 	
 	/**
-	 * データフローモデリングステージへ戻るとき, GUI上のコントローフローグラフを削除する.
+	 * Clear all cells on the PUSH/PULL layer.
 	 *
-	 * @param graph 変更対象のグラフ
+	 * @param graph mxGraph to be modified
 	 */
 	private void clearControlFlowGraphCells(mxGraph graph) {
 		mxCell root = (mxCell) graph.getDefaultParent();
@@ -741,10 +740,10 @@
 	}
 	
 	/**
-	 * 状態を持たないオブジェクトをコントロールフローグラフに追加する.
+	 * Add a stateless object node to the control-flow graph
 	 *
-	 * @param insertObjNode  追加したいオブジェクトの情報
-	 * @param selectedOption コントロールフローのデータ転送方式
+	 * @param insertObjNode  An object node to be added
+	 * @param selectedOption Data-tranfer method
 	 */
 	private void addObjectNodeToCallGraph(final ObjectNode insertObjNode, final PushPullValue selectedOption) {
 		switch (selectedOption) {