diff --git a/collects/tests/web-server/template/examples/diff.html b/collects/tests/web-server/template/examples/diff.html
new file mode 100644
index 0000000000..c11dce5379
--- /dev/null
+++ b/collects/tests/web-server/template/examples/diff.html
@@ -0,0 +1,2 @@
+This is the number: $(+ 2 40)
+This is not the number: @(+ 2 40)