diff --git a/cookbook/pageindex_RAG_simple.ipynb b/cookbook/pageindex_RAG_simple.ipynb
index dcaa200..65dc549 100644
--- a/cookbook/pageindex_RAG_simple.ipynb
+++ b/cookbook/pageindex_RAG_simple.ipynb
@@ -24,7 +24,9 @@
         "  <a href=\"https://github.com/vectifyai/pageindex\">📦 GitHub</a>&nbsp; • &nbsp;\n",
         "  <a href=\"https://discord.com/invite/VuXuf29EUj\">💬 Discord</a>&nbsp; • &nbsp;\n",
         "  <a href=\"https://ii2abc2jejf.typeform.com/to/tK3AXl8T\">✉️ Contact</a>&nbsp;\n",
-        "</p>"
+        "</p>\n",
+        "\n",
+        "---"
       ]
     },
     {
@@ -40,7 +42,7 @@
       "cell_type": "markdown",
       "metadata": {},
       "source": [
-        "## Introduction\n",
+        "## PageIndex Introduction\n",
         "PageIndex is a new **vectorless RAG** framework. It conduct retrieval in two steps:  \n",
         "1. Generate a tree structure to index documents  \n",
         "2. Perform reasoning-based retrieval through tree search  \n",