From 8d43eff65522704df29ae83777b6ce347a1e8276 Mon Sep 17 00:00:00 2001
From: NextTurn <45985406+NextTurn@users.noreply.github.com>
Date: Tue, 26 Nov 2019 00:00:00 +0800
Subject: [PATCH] Note about the "incremental download" feature

---
 doc/xmlConfigFile.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/doc/xmlConfigFile.md b/doc/xmlConfigFile.md
index 1d5ac3d..0caf0e0 100644
--- a/doc/xmlConfigFile.md
+++ b/doc/xmlConfigFile.md
@@ -205,6 +205,8 @@ Examples:
 
 This is another useful building block for developing a self-updating service.
 
+Since v2.7, if the destination file exists, WinSW will send its last write time in the `If-Modified-Since` header and skip downloading if `304 Not Modified` is received.
+
 ### log
 
 See the "Logging" section above for more details.