diff --git a/doc/sandbox.mdwn b/doc/sandbox.mdwn
index 3626a2191..42f8f3773 100644
--- a/doc/sandbox.mdwn
+++ b/doc/sandbox.mdwn
@@ -35,3 +35,5 @@ Bulleted list
 * just another commit (: no preview?
 
 [[WikiLink]]
+
+[[SandBox/SubPage]] -- a page under this one.