From d15594824ad051aa80fe3b5ddbdd74539ac047a5 Mon Sep 17 00:00:00 2001
From: Shlomi Noach <shlomi-noach@github.com>
Date: Tue, 21 Feb 2017 17:34:58 -0700
Subject: [PATCH] documenting --timestamp-old-table

---
 doc/command-line-flags.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/doc/command-line-flags.md b/doc/command-line-flags.md
index 83bfe05..d266f2c 100644
--- a/doc/command-line-flags.md
+++ b/doc/command-line-flags.md
@@ -130,3 +130,7 @@ See `approve-renamed-columns`
 ### test-on-replica
 
 Issue the migration on a replica; do not modify data on master. Useful for validating, testing and benchmarking. See [testing-on-replica](testing-on-replica.md)
+
+### timestamp-old-table
+
+Makes the _old_ table include a timestamp value. The _old_ table is what the original table is renamed to at the end of a successful migration. For example, if the table is `gh_ost_test`, then the _old_ table would normally be `_gh_ost_test_del`. With `--timestamp-old-table` it would be, for example, `_gh_ost_test_20170221103147_del`.