diff --git a/.github/workflows/pr.yml b/.github/workflows/pr.yml
index 89d1c24..35c906a 100644
--- a/.github/workflows/pr.yml
+++ b/.github/workflows/pr.yml
@@ -1,9 +1,9 @@
+# Trigger workflow on all PRs:
 on:
-  workflow_dispatch:
-    pull_request:
-      branches:
-        - main
-name: Quarto Publish
+  pull_request:
+    branches:
+      - main
+name: Quarto PR
 
 jobs:
   build-deploy:
diff --git a/index.qmd b/index.qmd
index d63840d..39f6936 100644
--- a/index.qmd
+++ b/index.qmd
@@ -10,3 +10,5 @@ To learn more about Quarto websites visit <https://quarto.org/docs/websites>.
 
 The content below was rendered from README.qmd in the [robinlovelace/opengeohub23 GitHub repository](https://github.com/robinlovelace/opengeohub2023) where you can find the source code for this website.
 
+
+
diff --git a/pois_buffer_simple.geojson b/pois_buffer_simple.geojson
new file mode 100644
index 0000000..e515f62
--- /dev/null
+++ b/pois_buffer_simple.geojson
@@ -0,0 +1,8 @@
+{
+"type": "FeatureCollection",
+"name": "pois_buffer_simple",
+"crs": { "type": "name", "properties": { "name": "urn:ogc:def:crs:OGC:1.3:CRS84" } },
+"features": [
+{ "type": "Feature", "properties": { }, "geometry": { "type": "Polygon", "coordinates": [ [ [ 16.948159259785697, 52.467018649468393 ], [ 16.945906834527854, 52.468121899022563 ], [ 16.943592045109263, 52.468719836988946 ], [ 16.941381762279136, 52.46887364217018 ], [ 16.939109306218256, 52.468522114050636 ], [ 16.937373939872934, 52.468005793222993 ], [ 16.937108273064851, 52.467787665284952 ], [ 16.936051996110599, 52.467128559159598 ], [ 16.935081980435235, 52.466199559317872 ], [ 16.934358619911684, 52.464848486957415 ], [ 16.934471752424528, 52.463502992980544 ], [ 16.935220658549092, 52.462149726094758 ], [ 16.935997753658334, 52.461349565140729 ], [ 16.936290919708703, 52.461306434178326 ], [ 16.936738085654181, 52.46089772799975 ], [ 16.93861995174105, 52.460020735172577 ], [ 16.945140974580962, 52.45674634129314 ], [ 16.947522749316381, 52.456052786486083 ], [ 16.949682855564937, 52.455820451435258 ], [ 16.952306640859632, 52.456119876247257 ], [ 16.953924663617688, 52.456653121987927 ], [ 16.955240458372092, 52.457316604640816 ], [ 16.956699516946028, 52.458816298902384 ], [ 16.95722048431605, 52.460454222935972 ], [ 16.956858033714674, 52.461707911748569 ], [ 16.956143116993886, 52.462606287155467 ], [ 16.9560629601567, 52.462682397268459 ], [ 16.955363051221511, 52.463299917159596 ], [ 16.9546475126308, 52.463791130258393 ], [ 16.948159259785697, 52.467018649468393 ] ] ] } }
+]
+}
diff --git a/tidy.qmd b/tidy.qmd
index 9828983..25ff5b5 100644
--- a/tidy.qmd
+++ b/tidy.qmd
@@ -72,6 +72,7 @@ pkgs = c(
     "ggspatial",
     "spData"
 )
+stop("This is a test")
 ```
 
 ```{r}
@@ -452,6 +453,16 @@ pois_buffer = poi_sf |>
   st_buffer(dist = 500)
 ```
 
+We'll save the output for future reference:
+
+```{r}
+pois_buffer_simple = pois_buffer |>
+  st_simplify(dTolerance = 10)
+plot(pois_buffer)
+plot(pois_buffer_simple, add = TRUE, border = "blue")
+sf::write_sf(pois_buffer_simple, "pois_buffer_simple.geojson", delete_dsn = TRUE)
+```
+
 ```{r}
 extra_tags = c("maxspeed", "foot", "bicycle")
 ```