diff --git a/doc/~$便签开源代码的泛读报告.docx b/doc/~$便签开源代码的泛读报告.docx
new file mode 100644
index 0000000..ce3b1e8
Binary files /dev/null and b/doc/~$便签开源代码的泛读报告.docx differ
diff --git a/src/data/Notes.java b/src/data/Notes.java
index 02346bb..4bbaa8c 100644
--- a/src/data/Notes.java
+++ b/src/data/Notes.java
@@ -10,12 +10,7 @@ public class Notes {
     public static final int TYPE_FOLDER   = 1;
     public static final int TYPE_SYSTEM   = 2;
 
-    /**
-     * Following IDs are system folders' identifiers
-     * {@link Notes#ID_ROOT_FOLDER } is default folder
-     * {@link Notes#ID_TEMPARAY_FOLDER } is for notes belonging no folder
-     * {@link Notes#ID_CALL_RECORD_FOLDER} is to store call records
-     */
+   
     public static final int ID_ROOT_FOLDER = 0;
     public static final int ID_TEMPARAY_FOLDER = -1;
     public static final int ID_CALL_RECORD_FOLDER = -2;