--- a/DeviceWorkstation.st	Mon Apr 23 21:54:22 2018 +0200
+++ b/DeviceWorkstation.st	Wed Apr 25 12:28:18 2018 +0200
@@ -6917,10 +6917,18 @@
 !
 
 altModifiers:arrayOfAltModifierKeys
-    "Change the set of keys which are treated as Alt-keys."
+    "Change the set of keys which are treated as Alt-keys.
+     This is useful for ST/X on OSX on XQuartz, where the window manager
+     uses the CMD keys, making it unavailable for ST/X.
+     Here, we map the left ALT key onto the command key 
+     (see keyboard.rc). Lefthanders might want to use the right ALT key for that."
 
     altModifiers := arrayOfAltModifierKeys
 
+    "
+     Screen current cmdModifiers
+     Screen current altModifiers:#(#'Meta_L' #'Meta_R' #'Hyper_R')
+    "
     "Created: 2.1.1996 / 14:58:24 / cg"
 !
 
@@ -6958,7 +6966,11 @@
 !
 
 metaModifiers:arrayOfMetaModifierKeys
-    "Change the set of keys which are treated as Meta-keys (i.e. Cmd keys)."
+    "Change the set of keys which are treated as Meta-keys (i.e. Cmd keys).
+     This is useful for ST/X on OSX on XQuartz, where the window manager
+     uses the CMD keys, making it unavailable for ST/X.
+     Here, we map the left ALT key onto the command key 
+     (see keyboard.rc). Lefthanders might want to use the right ALT key for that."
 
     metaModifiers := arrayOfMetaModifierKeys