--- a/GenericException.st	Tue Feb 06 17:41:35 2018 +0100
+++ b/GenericException.st	Tue Feb 06 17:42:49 2018 +0100
@@ -1380,7 +1380,11 @@
 messageText:aString
     "set the messageText.
      If it starts with a space, the signal's original messageText is prepended,
-     if it ends with a space, it is appended."
+     if it ends with a space, it is appended.
+
+     messageText: does the same as errorString:,
+     but should be used for notifications and queries, 
+     whereas errorString: should be used for errors and exceptions"
 
     messageText := aString