diff --git a/doc/sandbox/subpage.mdwn b/doc/sandbox/subpage.mdwn
new file mode 100644
index 000000000..3b53e07e0
--- /dev/null
+++ b/doc/sandbox/subpage.mdwn
@@ -0,0 +1 @@
+This is a [[SubPage]] of the [[SandBox]].
\ No newline at end of file