From ece64eff3baf6a88bfb53eea936efb55d71ce96d Mon Sep 17 00:00:00 2001
From: H.G. Muller <h.g.muller@hccnet.nl>
Date: Wed, 15 Jan 2014 21:28:51 +0100
Subject: [PATCH] Put fail-high/fail-low indicators in protocol specs

---
 engine-intf.html |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/engine-intf.html b/engine-intf.html
index 8d5e700..969495b 100644
--- a/engine-intf.html
+++ b/engine-intf.html
@@ -1824,6 +1824,12 @@ It is therefore encouraged that engines use tabs or spaces to format this option
 so that it will display nicely in (not too wide) columns.
 </p>
 
+<p class="version47">
+A question mark as the last character in the <b>pv</b> field should be used to indicate
+the reported score is from a fail low, and thus represents an upper bound only.
+Similarly, an exclamation point should be used to indicate a fail high / lower bound.
+</p>
+
 <p>
 Example:
 </p>
-- 
1.7.0.4