diff --git a/org.ntlab.traceAnalyzer/src/org/ntlab/trace/Trace.java b/org.ntlab.traceAnalyzer/src/org/ntlab/trace/Trace.java
index 1bf9da7..7067007 100644
--- a/org.ntlab.traceAnalyzer/src/org/ntlab/trace/Trace.java
+++ b/org.ntlab.traceAnalyzer/src/org/ntlab/trace/Trace.java
@@ -201,6 +201,11 @@
 		});
 	}
 	
+	/**
+	 * �g���[�X���̑S���\�b�h���s�̊J�n�n�_���t�����ɒT������
+	 * @param visitor ���\�b�h���s�̃r�W�^�[(postVisitMethodExecution()�����ĂѕԂ��Ȃ��̂Œ���)
+	 * @return ���f�������\�b�h���s
+	 */
 	public MethodExecution traverseMethodEntriesInTraceBackward(IMethodExecutionVisitor visitor) {
 		HashMap<String, ArrayList<MethodExecution>> threadRoots = new HashMap<String, ArrayList<MethodExecution>>();
 		HashMap<String, TracePoint> threadLastPoints = new HashMap<String, TracePoint>();
@@ -252,6 +257,12 @@
 		}, before);
 	}
 	
+	/**
+	 * �w�肵�����s���_�ȑO�Ɏ��s���J�n���ꂽ���\�b�h���s�̊J�n���_���t�����ɒT������
+	 * @param visitor ���\�b�h���s�̃r�W�^�[(postVisitMethodExecution()�����ĂѕԂ��Ȃ��̂Œ���)
+	 * @param before �T���J�n���_
+	 * @return ���f�������\�b�h���s
+	 */
 	public MethodExecution traverseMethodEntriesInTraceBackward(IMethodExecutionVisitor visitor, TracePoint before) {
 		HashMap<String, ArrayList<MethodExecution>> threadRoots = new HashMap<String, ArrayList<MethodExecution>>();
 		HashMap<String, TracePoint> threadLastPoints = new HashMap<String, TracePoint>();