--- a/AbstractOperatingSystem.st	Fri Apr 24 06:44:03 2015 +0200
+++ b/AbstractOperatingSystem.st	Sat Apr 25 06:43:41 2015 +0200
@@ -2670,6 +2670,8 @@
      On MSDOS, this will return false;
      on a real OS, we return true."
 
+    "/ actually, this query is too general, as it may depend on the mounted volume;
+    "/ so we need a query for a particular directory (and/or volume).
     self subclassResponsibility
 !
 
@@ -7726,11 +7728,11 @@
 !AbstractOperatingSystem class methodsFor:'documentation'!
 
 version
-    ^ '$Header: /cvs/stx/stx/libbasic/AbstractOperatingSystem.st,v 1.297 2015-04-19 09:46:54 cg Exp $'
+    ^ '$Header: /cvs/stx/stx/libbasic/AbstractOperatingSystem.st,v 1.298 2015-04-24 08:12:43 cg Exp $'
 !
 
 version_CVS
-    ^ '$Header: /cvs/stx/stx/libbasic/AbstractOperatingSystem.st,v 1.297 2015-04-19 09:46:54 cg Exp $'
+    ^ '$Header: /cvs/stx/stx/libbasic/AbstractOperatingSystem.st,v 1.298 2015-04-24 08:12:43 cg Exp $'
 ! !