From 9383f7b11fd66f63f1443218c5dc66cbed69c568 Mon Sep 17 00:00:00 2001
From: John Kerl <kerl@fb.com>
Date: Sun, 7 Oct 2018 21:43:57 -0400
Subject: [PATCH] fill-down doc

---
 doc/data/fill-down.csv | 4 ++++
 1 file changed, 4 insertions(+)
 create mode 100644 doc/data/fill-down.csv

diff --git a/doc/data/fill-down.csv b/doc/data/fill-down.csv
new file mode 100644
index 000000000..88477a59d
--- /dev/null
+++ b/doc/data/fill-down.csv
@@ -0,0 +1,4 @@
+a,b,c
+1,,3
+4,5,6
+7,,9