diff --git a/mediawiki-api.ipynb b/mediawiki-api.ipynb
index 9fd6711..e78f42e 100644
--- a/mediawiki-api.ipynb
+++ b/mediawiki-api.ipynb
@@ -49,37 +49,42 @@
    ]
   },
   {
-   "cell_type": "markdown",
+   "cell_type": "code",
+   "execution_count": 65,
    "metadata": {},
+   "outputs": [],
    "source": [
-    "https://pzwiki.wdka.nl/mw-mediadesign/api.php?action=query&titles=Main%20page&format=json"
+    "# When you visit .... https://pzwiki.wdka.nl/mw-mediadesign/ ........ the URL magically turns into ........ https://pzwiki.wdka.nl/mediadesign/Main_Page\n",
+    "# This is probably something configured on the server (which is the XPUB XVM server, the wiki is installed there)."
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 67,
    "metadata": {},
    "outputs": [],
    "source": [
-    "# what's in this URL?"
+    "# How to access the API?\n",
+    "\n",
+    "# Visit in the browser: "
    ]
   },
   {
-   "cell_type": "code",
-   "execution_count": null,
+   "cell_type": "markdown",
    "metadata": {},
-   "outputs": [],
    "source": [
-    "# https://pzwiki.wdka.nl/mw-mediadesign/ ........ magically turns into ........ https://pzwiki.wdka.nl/mediadesign/Main_Page"
+    "https://pzwiki.wdka.nl/mw-mediadesign/api.php (This is the main access point of the API of the PZI wiki.)\n",
+    "\n",
+    "https://pzwiki.wdka.nl/mw-mediadesign/api.php?action=query&titles=Main%20page&format=json (This is an example of an API request.)"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 64,
    "metadata": {},
    "outputs": [],
    "source": [
-    "# https://pzwiki.wdka.nl/mw-mediadesign/api.php"
+    "# What's in this URL?"
    ]
   },
   {
@@ -166,6 +171,16 @@
     "# Wander around in the documentation page, edit the URL, make a couple requests!"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": 68,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# Try to use the actions: \"query\" and \"parse\". \n",
+    "# We will focus on these two today."
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": null,