diff --git a/AlgebraicDataflowArchitectureModel/src/models/controlFlowModel/ObjectNode.java b/AlgebraicDataflowArchitectureModel/src/models/controlFlowModel/ObjectNode.java
index a2b27e6..7af6a3b 100644
--- a/AlgebraicDataflowArchitectureModel/src/models/controlFlowModel/ObjectNode.java
+++ b/AlgebraicDataflowArchitectureModel/src/models/controlFlowModel/ObjectNode.java
@@ -24,10 +24,22 @@
 		this.name = name;
 	}
 	
+	/**
+	 * Get the specific edge that connects to the input port of the node.
+	 *
+	 * @param i the index of the edge in the input edges
+	 * @return the edge
+	 */
 	public CallEdge getInEdge(int i) {
 		return (CallEdge) ((List<Edge>) inEdges).get(i);
 	}
 	
+	/**
+	 * Get the specific edge that connects to the output port of the node.
+	 *
+	 * @param i the index of the edge in the output edges
+	 * @return the edge
+	 */
 	public CallEdge getOutEdge(int i) {
 		return (CallEdge) ((List<Edge>) outEdges).get(i);
 	}
@@ -58,10 +70,11 @@
 		return (ObjectNode) ((List<Edge>) outEdges).get(i).getDestination();
 	}
 	
-	/*************************************************************
-	 * 指定したエッジ（出力側）の呼び出し順を変更する. 
-	 * @param curOrder 現在の呼び出し順
-	 * @param newCallOrder 新しい呼び出し順
+	/**
+	 * Change the call order of specified output edge.
+	 *
+	 * @param curOrder     Current call order
+	 * @param newCallOrder New call order
 	 */
 	public void sortOutEdgesByCallOrder(final int curOrder, final int newCallOrder) {
 		ArrayList<Edge> edges = ((ArrayList<Edge>) outEdges);