diff --git a/build/libraries_sysmenu/namut/ARM9/src/namut.c b/build/libraries_sysmenu/namut/ARM9/src/namut.c
index 451fbae7..534625a4 100644
--- a/build/libraries_sysmenu/namut/ARM9/src/namut.c
+++ b/build/libraries_sysmenu/namut/ARM9/src/namut.c
@@ -451,6 +451,48 @@ static BOOL NAMUTi_FillFile(const char* path)
 	return TRUE;
 }
 
+/*---------------------------------------------------------------------------*
+  Name:         NAMUT_SearchInstalledSoftBoxCount
+
+  Description:  InstalledSoftBoxCountの数を調べて返します。
+
+  Arguments:    None
+
+  Returns:      None
+ *---------------------------------------------------------------------------*/
+u32 NAMUT_SearchInstalledSoftBoxCount( void )
+{
+	s32 title_num;	
+	NAMTitleInfo namTitleInfo;
+	u32 count = 0;
+	s32 i;
+
+	// タイトルリスト取得
+	if (NAM_GetTitleList(sTitleIdArray, TITLE_LIST_MAX) != NAM_OK)
+	{
+		SDK_ASSERTMSG(0, "Fail! NAM_GetTitleList() in %s\n", __func__);
+		return 0;
+	}
+	
+	// タイトル数取得
+	title_num = NAM_GetNumTitles();
+
+	for (i=0;i<title_num;i++)
+	{
+		// タイトル情報取得
+	    if( NAM_ReadTitleInfo(&namTitleInfo, sTitleIdArray[i]) == NAM_OK )
+	    {
+			// NOT_LAUNCH_FLAG または DATA_ONLY_FLAG が立っているタイトルはカウントしない
+			if (!(namTitleInfo.titleId & (TITLE_ID_NOT_LAUNCH_FLAG_MASK | TITLE_ID_DATA_ONLY_FLAG_MASK)))
+			{
+				count++;
+			}
+		}
+	}
+
+	return count;
+}
+
 /*---------------------------------------------------------------------------*
   Name:         NAMUT_DrawNandTree
 
diff --git a/include/sysmenu/namut.h b/include/sysmenu/namut.h
index 960c27f5..e8ddfa6f 100644
--- a/include/sysmenu/namut.h
+++ b/include/sysmenu/namut.h
@@ -11,8 +11,8 @@
   in whole or in part, without the prior written consent of Nintendo.
 
   $Date::            $
-  $Rev:$
-  $Author:$
+  $Rev$
+  $Author$
  *---------------------------------------------------------------------------*/
 
 #ifndef NAM_UTILITY_H_
@@ -23,8 +23,42 @@ extern "C" {
 #endif
 
 #ifdef SDK_ARM9
+
+/*---------------------------------------------------------------------------*
+  Name:         NAMUT_Format
+
+  Description:  NANDの擬似フォーマット
+               （システム系の必要なファイルのみを残し他を消去します）
+
+  Arguments:    None
+
+  Returns:      None
+ *---------------------------------------------------------------------------*/
 BOOL NAMUT_Format(void);
+
+/*---------------------------------------------------------------------------*
+  Name:         NAMUT_SearchInstalledSoftBoxCount
+
+  Description:  InstalledSoftBoxCountの数を調べて返します。
+
+  Arguments:    None
+
+  Returns:      None
+ *---------------------------------------------------------------------------*/
+u32 NAMUT_SearchInstalledSoftBoxCount( void );
+
+/*---------------------------------------------------------------------------*
+  Name:         NAMUT_DrawNandTree
+
+  Description:  NANDのツリー情報をプリント出力します
+
+  Arguments:    ...
+
+  Returns:      None.
+ *---------------------------------------------------------------------------*/
 void NAMUT_DrawNandTree(void);
+
+
 #endif // SDK_ARM9
 
 #ifdef __cplusplus