[S32/Containers] KeyWeight deletion critierion kept consistent for db…

…runton++

git-svn-id: http://svn.pugscode.org/pugs@29576 c213334d-75ef-0310-aa23-eaa082d1ae64

S32-setting-library/Containers.pod

@@ -19,8 +19,8 @@ DRAFT: Synopsis 32: Setting Library - Containers.pod
 
     Created: 19 Feb 2009 extracted from S29-functions.pod
 
-    Last Modified: 9 Jan 2010
-    Version: 13
+    Last Modified: 21 Jan 2010
+    Version: 14
 
 The document is a draft.
 
@@ -981,8 +981,9 @@ and whose values are the deleted replication values.
 
 A C<KeyHash of FatRat>; like a C<KeyBag> but may have non-integral
 weights for use in weighted picking.  Keys with fractional weights
-are deleted if they go non-positive, but a warning is issued
-for deletion of any element that didn't go exactly to 0.
+are deleted if they go to 0.  Negative weights are not deleted, but
+the implementation may complain if it notices you attempting to use
+such a weight.
 
 =head2 Junction