--- a/KeyedCollection.st	Mon May 16 08:37:31 2016 +0200
+++ b/KeyedCollection.st	Mon May 16 08:37:42 2016 +0200
@@ -170,7 +170,8 @@
 
 removeKey:aKey ifAbsent:exceptionBlock
     "remove key (and the value stored under that key) from the
-     receiver; if no such element is contained, return the value
+     receiver; return the value which was stored previously there.
+     If no such element is contained, return the value
      from evaluating exceptionBlock"
 
     ^ self subclassResponsibility