--- a/AbstractOperatingSystem.st	Fri May 18 18:53:59 2018 +0200
+++ b/AbstractOperatingSystem.st	Sat May 19 13:23:03 2018 +0200
@@ -1140,6 +1140,7 @@
     "Created: / 12.11.1998 / 14:39:20 / cg"
 ! !
 
+
 !AbstractOperatingSystem class methodsFor:'executing OS commands-public'!
 
 executeCommand:aCommandString
@@ -4229,6 +4230,12 @@
     "unsupported - simply stay silent"
 
     ^ self.
+!
+
+speakVoiceOutput:aString
+    "unsupported - simply stay silent"
+
+    ^ self.
 ! !
 
 !AbstractOperatingSystem class methodsFor:'obsolete'!