JAL-2189 JAL-2005 mention alignment order preservation when equivalent sequences...

diff --git a/help/html/calculations/sorting.html b/help/html/calculations/sorting.html
index 8c017a9..5b6f616 100755 (executable)
--- a/help/html/calculations/sorting.html
+++ b/help/html/calculations/sorting.html
@@ -88,10 +88,12 @@
   <p>Selecting any item from the Sort menu will sort sequences in an
     ascending order according to the property defining the sort. If the
     same sort is re-applied, the sequences will be sorted in the inverse
-    order. In the case of trees and alignment orderings, Jalview will
-    remember your last choice for sorting the alignment and only apply
-    the inverse ordering if you select the same tree or alignment
-    ordering item again.</p>
+    order. In both cases, for sequences which are equivalent under the sort
+    operation, their order will be preserved (since version 2.10). In
+    the case of trees and alignment orderings, Jalview will remember
+    your last choice for sorting the alignment and only apply the
+    inverse ordering if you select the same tree or alignment ordering
+    item again.</p>
 
 </body>
 </html>