diff --git a/src/NoteEditActivity.java b/src/NoteEditActivity.java
index cd61ada..f6bed26 100644
--- a/src/NoteEditActivity.java
+++ b/src/NoteEditActivity.java
@@ -520,8 +520,10 @@ public class NoteEditActivity extends Activity implements OnClickListener,
     public boolean onOptionsItemSelected(MenuItem item) {
         switch (item.getItemId()) {
             case R.id.menu_new_note:
+                // 新建便签的菜单项ID
                 createNewNote();
                 break;
+                // 其他菜单项处理...
             case R.id.menu_delete:
                 AlertDialog.Builder builder = new AlertDialog.Builder(this);
                 builder.setTitle(getString(R.string.alert_title_delete));
@@ -584,7 +586,9 @@ public class NoteEditActivity extends Activity implements OnClickListener,
         intent.setType("text/plain");
         context.startActivity(intent);
     }
-
+    /**
+     *调用该方法执行新建便签的逻辑。
+     */
     private void createNewNote() {
         // Firstly, save current editing notes
         saveNote();
diff --git a/~$_小米便签开源代码阅读-精读报告230340018姚远.docx b/~$_小米便签开源代码阅读-精读报告230340018姚远.docx
deleted file mode 100644
index ce32a01..0000000
Binary files a/~$_小米便签开源代码阅读-精读报告230340018姚远.docx and /dev/null differ