4 files changed, 13 insertions, 1 deletions
diff --git a/demo/link.ur b/demo/link.ur
index f9e33968..122b98f1 100644
--- a/demo/link.ur
+++ b/demo/link.ur
@@ -3,5 +3,5 @@ fun target () = return <xml><body>
 </body></xml>
 
 fun main () = return <xml><body>
-  <a link={target ()}>Go there</a>
+  <a link={target}>Go there</a>
 </body></xml>
diff --git a/demo/sum.ur b/demo/sum.ur
new file mode 100644
index 00000000..96a45891
--- /dev/null
+++ b/demo/sum.ur
@@ -0,0 +1,9 @@
+fun sum (fs :: {Unit}) (x : $(mapUT int fs)) =
+    foldUR [int] [fn _ => int]
+    (fn (nm :: Name) (rest :: {Unit}) [[nm] ~ rest] n acc => n + acc)
+    0 [fs] x
+
+fun main () = return <xml><body>
+  {[sum [[A, B]] {A = 0, B = 1}]}<br/>
+  {[sum [[C, D, E]] {C = 2, D = 3, E = 4}]}
+</body></xml>
diff --git a/demo/sum.urp b/demo/sum.urp
new file mode 100644
index 00000000..e872a81b
--- /dev/null
+++ b/demo/sum.urp
@@ -0,0 +1,2 @@
+
+sum
diff --git a/demo/sum.urs b/demo/sum.urs
new file mode 100644
index 00000000..6ac44e0b
--- /dev/null
+++ b/demo/sum.urs
@@ -0,0 +1 @@
+val main : unit -> transaction page