diff --git a/AlgebraicDataflowArchitectureModel/src/models/controlFlowModel/ControlFlowDelegator.java b/AlgebraicDataflowArchitectureModel/src/models/controlFlowModel/ControlFlowDelegator.java
index 791453c..96d4543 100644
--- a/AlgebraicDataflowArchitectureModel/src/models/controlFlowModel/ControlFlowDelegator.java
+++ b/AlgebraicDataflowArchitectureModel/src/models/controlFlowModel/ControlFlowDelegator.java
@@ -151,10 +151,10 @@
 	}
 	
 	/**
-	 * PULLのコントロールフローにおいて, DoM適用可能な仲介者オブジェクトを探索する.
+	 * Add mediator object nodes collected from the given call edge to the given {@code nodes}
 	 *
-	 * @param nodes
-	 * @param callEdge
+	 * @param nodes    list of nodes which the collected nodes added to
+	 * @param callEdge the call edge which maybe contain a mediator objects in it
 	 */
 	private void collectDependableObjectNodeOnPullTransfer(List<ObjectNode> nodes, CallEdge callEdge) {
 		if (callEdge.getSelectedOption() != PushPullValue.PULL) return;
@@ -189,18 +189,20 @@
 	}
 	
 	/**
-	 * あるノードがルートかどうか
+	 * Indicates whether the given object node is in the root or not.
 	 *
-	 * @param node
+	 * @param node the object node to be checked
+	 * @return {@code true} if the given object node is in the root, otherwise {@code false}
 	 */
 	private boolean isRootNode(final ObjectNode node) {
 		return node.getInEdges().isEmpty();
 	}
 	
 	/**
-	 * 呼び出し先があるかどうか
+	 * Indicates whether the given object node has child nodes.
 	 *
-	 * @param node
+	 * @param node the object node to be checked
+	 * @return {@code true} if the given object node has child nodes, otherwise {@code false}
 	 */
 	private boolean hasChildrenNode(final ObjectNode node) {
 		if (node.getOutEdges().size() < 1) return false;