diff --git a/docs/manual/CoreTypes/filterset.html b/docs/manual/CoreTypes/filterset.html
index 468b45079..0ac198991 100644
--- a/docs/manual/CoreTypes/filterset.html
+++ b/docs/manual/CoreTypes/filterset.html
@@ -45,6 +45,9 @@ filters.</p>
 <p>Filtersets are used for doing 
 replacements in tasks such as <code>&lt;copy&gt;</code>, etc.</p>
 
+<p>If you specify multiple values for the same token, the last one
+  defined within a filterset will be used.</p>
+
 <p>
 <strong>Note: </strong>When a filterset is used in an operation, the files are 
 processed in text mode and the filters applied line by line. This means that