Link to the low level docs

Author: jtpio

docs/source/examples/Widget Custom.ipynb

@@ -24,12 +24,6 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "The widget framework is built on top of the Comm framework (short for communication).  The Comm framework is a framework that allows the kernel to send/receive JSON messages to/from the front end (as seen below).\n",
-    "\n",
-    "![Widget layer](images/WidgetArch.png)\n",
-    "\n",
-    "To create a custom widget, you need to define the widget both in the browser and in the Python kernel.\n",
-    "\n",
     "This tutorial shows how to build a simple email widget using the TypeScript widget cookiecutter: https://github.com/jupyter-widgets/widget-ts-cookiecutter"
    ]
   },
@@ -172,7 +166,15 @@
     }
    },
    "source": [
-    "## Implementing the widget"
+    "## Implementing the widget\n",
+    "\n",
+    "The widget framework is built on top of the Comm framework (short for communication).  The Comm framework is a framework that allows the kernel to send/receive JSON messages to/from the front end (as seen below).\n",
+    "\n",
+    "![Widget layer](images/WidgetArch.png)\n",
+    "\n",
+    "To learn more about how the underlying Widget protocol works, check out the [Low Level Widget](Widget%20Low%20Level.ipynb) documentation.\n",
+    "\n",
+    "To create a custom widget, you need to define the widget both in the browser and in the Python kernel.\n"
    ]
   },
   {