diff --git a/smoketest.md b/smoketest.md
index 5ce3f3d9d..66c3d641e 100644
--- a/smoketest.md
+++ b/smoketest.md
@@ -1,6 +1,6 @@
# Spacer Title
-
+
# Hidden smoketest page
@@ -65,3 +65,19 @@ added in-line with the
Example:
`git clone -b "{{% branch override="release-0.NEXT" %}}" https://github.com/knative/docs knative-docs`
+
+## Tabs
+
+How to include tabbed content in your page. Note that you can set a default tab.
+
+(View the raw version of this page for example syntax; it doesn't render well here.)
+
+ {{< tabs name="tabs_example" default="Include example" >}}
+{{% tab name="Regular example" %}}
+This is a regular example tab.
+{{< /tab >}}
+
+{{% tab name="Include example" %}}
+{{% readfile file="./docs/install/README.md" %}}
+{{< /tab >}}
+{{< /tabs >}}