From 517c4b5f314635748b641bf4fcdcba4fb85656d3 Mon Sep 17 00:00:00 2001
From: John MacFarlane <jgm@berkeley.edu>
Date: Wed, 16 Jan 2013 09:25:12 -0800
Subject: [PATCH] README clarification.

---
 README | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/README b/README
index 336f9c5a9..40c8b09e2 100644
--- a/README
+++ b/README
@@ -973,6 +973,9 @@ links to link to the others, as described above.
 
 Unlike regular reference links, these references are case-sensitive.
 
+Note:  if you have defined an explicit identifier for a header,
+then implicit references to it will not work.
+
 Block quotations
 ----------------