--- a/Random.st	Fri Mar 25 16:52:58 2016 +0100
+++ b/Random.st	Fri Mar 25 17:04:10 2016 +0100
@@ -802,6 +802,9 @@
 !
 
 isWritable
+    "return true, if writing is supported by the receiver.
+     Random Generators never are"
+
     ^ false
 
     "Created: 1.4.1997 / 22:38:27 / cg"