diff --git a/module_notebooks/04-read-mapping-with-vg.ipynb b/module_notebooks/04-read-mapping-with-vg.ipynb
index 3502134..4d401f4 100644
--- a/module_notebooks/04-read-mapping-with-vg.ipynb
+++ b/module_notebooks/04-read-mapping-with-vg.ipynb
@@ -229,10 +229,8 @@
    ]
   },
   {
-   "cell_type": "code",
-   "execution_count": null,
+   "cell_type": "markdown",
    "metadata": {},
-   "outputs": [],
    "source": [
     "<details>\n",
     "<summary>Click for help</summary>\n",
@@ -283,11 +281,12 @@
     "-x the graph to use  \n",
     "-b stdout is in bam format  \n",
     "-t the number of threads to use  \n",
-    "-p path to surject into\n",
+    "-p path to surject into  \n",
+    "Graph alignment file (gam)\n",
     "\n",
     "We will redirect the output into a bam file.\n",
     "\n",
-    "We'll surget variants onto S288C_chrVIII."
+    "We'll surject variants onto S288C_chrVIII."
    ]
   },
   {
@@ -370,6 +369,12 @@
   }
  ],
  "metadata": {
+  "environment": {
+   "kernel": "conda-env-nigms-pangenomics-nigms-pangenomics",
+   "name": "workbench-notebooks.m127",
+   "type": "gcloud",
+   "uri": "us-docker.pkg.dev/deeplearning-platform-release/gcr.io/workbench-notebooks:m127"
+  },
   "kernelspec": {
    "display_name": "nigms-pangenomics",
    "language": "python",