fix: rebase merged two cells

examples/02_Base_Commands.ipynb

@@ -54,6 +54,15 @@
     "aladin.target = \"sgr a*\""
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "aladin.layers"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": null,
@@ -101,8 +110,8 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "aladin.overlay_survey = \"P/allWISE/color\"\n",
-    "aladin.overlay_survey_opacity = 0.5"
+    "aladin.add_hips(\"P/allWISE/color\", name=\"overlay\")\n",
+    "aladin.set_layer_opacity(\"overlay\", 0.5)"
    ]
   },
   {
@@ -172,12 +181,38 @@
     "aladin.add_fits(Path(\"images/m31.fits\"), name=\"M31\", opacity=0.5)"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "aladin.layers"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "And the fits image can be removed (as any other layer except `base`) with:"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "aladin.remove_layer(\"M31\")"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
    "source": [
     "You can add markers to the view of the widget with custom popup title and description.\n",
-    "Here we will add markers for Messier objects M1 to M10."
+    "Here we will add markers for Messier objects M1 to M10.\n",
+    "You can get all layers identified by their name."
    ]
   },
   {