anchor.diff:  
   
   check([To, Object, Action], Params, Arg) ->
  -    ?MODULE:check([To, Object, Action, ""], Params, Arg);
  +    check([To, Object, Action, ""], Params, Arg);
   check([To, Object, Action, Meeting], [EUid, Conditions], _) ->
       case uce_acl:check(EUid, "acl", "check", [Meeting], [{"user", To},
                                                            {"action", Action},
  
positive.code:     end.
  
  add([To, Object, Action], Params, Arg) ->
      ?MODULE:add([To, Object, Action, ""], Params, Arg);
  add([To, Object, Action, Meeting], [EUid, Conditions], _) ->
      case uce_acl:check(EUid, "acl", "add", [Meeting], [{"user", To},
                                                         {"action", Action},
  
negative.code:     end.
  
  delete([To, Object, Action], Params, Arg) ->
      delete([To, Object, Action, "", ""], Params, Arg);
  delete([To, Object, Action, Meeting], [EUid, Conditions], _) ->
      case uce_acl:check(EUid, "acl", "delete", [Meeting], [{"user", To},
                                                            {"action", Action},
  