diff --git a/src/demo/DemoUrd.gf b/src/demo/DemoUrd.gf
new file mode 100644
index 000000000..cbed27294
--- /dev/null
+++ b/src/demo/DemoUrd.gf
@@ -0,0 +1,10 @@
+--# -path=.:alltenses
+
+concrete DemoUrd of Demo = LangUrd ** 
+  open LangUrd in {
+
+  lin 
+    AdjN ap n = AdjCN ap (UseN n) ;
+    AdAdj ad a = AdAP ad (PositA a) ;
+
+}