--- a/keyboard.rc	Thu Aug 08 16:44:26 2019 +0200
+++ b/keyboard.rc	Wed Aug 28 09:54:49 2019 +0200
@@ -221,7 +221,7 @@
 "/ map bindValue:#Tab              #'ISO_Left_Tab'
     #Menu             #Cmdz
 ) pairWiseDo:[:symbolic :key |
-	map bindValue:symbolic to:key.
+    map bindValue:symbolic to:key.
 ].
 
 OperatingSystem isMSWINDOWSlike ifTrue:[
@@ -230,6 +230,11 @@
     map bindValue:#UserInterrupt    to:#Pause. "X11"
 ].
 
+OperatingSystem isOSXlike ifTrue:[
+    "/ Screen current keyboardMap bindValue:#ToggleInsertMode to:#CtrlO
+    map bindValue:#ToggleInsertMode        to:#CtrlO.
+].
+
 "*
  * ISO LATIN 1 symbolic characters - map to iso8859-1/unicode values
  * not all Xservers send those correctly.