diff --git a/docs/_sidebar.md b/docs/_sidebar.md
index 886cbbc..45308f3 100644
--- a/docs/_sidebar.md
+++ b/docs/_sidebar.md
@@ -1 +1,2 @@
-- [Introduction](/)
\ No newline at end of file
+- [Introduction](/)
+- [[Function Index]]
\ No newline at end of file