[REBOL] open/allow Re:(2)

[bciceron]

-- 
-- The permissions passed to open have nothing to do with
-- unix permissions at all - they only apply to internal
-- REBOL restrictions on the use of the port. REBOL tries
-- to open the file with the access methods you specify.
-- If you request a form of access to the file that its
-- unix permissions don't allow, the open will fail.
-- 

so is the only thing we can do :?

open/allow %/tmp/foo [write]
or 
open/allow %/tmp/foo [read]