+a_ret:
+ accept message = ($acl_narg) [$acl_arg1] [$acl_arg2]
+
+a_none:
+ accept
+
+a_deny:
+ deny message = ($acl_narg) [$acl_arg1] [$acl_arg2]
+
+a_defer:
+ defer
+
+a_sub:
+ require acl = a_none foo bar baz barf
+ require acl = a_deny "new arg1" $acl_arg1
+