X-Git-Url: http://winboard.nl/cgi-bin?a=blobdiff_plain;f=engine-intf.html;h=969495b3c4bda8f4888d58ee3afcf4b80c27935e;hb=ece64eff3baf6a88bfb53eea936efb55d71ce96d;hp=8d5e700183b8bf6ae90f812ecb29b7cec4ce2035;hpb=533db2c788306e35c3eaee2eba0ce4a115be4bf3;p=xboard.git

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>