If a calendar was created by another application, it would be unsafe to allow & kalarm; to update it, since differences in data format might make it unusable by the creating application.
Kui kalender on loodud mõne muu rakendusega, ei ole turvaline lasta & kalarm; il seda uuendada, sest andmevormingu erinevused võivad muuta selle kasutamatuks rakenduses, millega kalender loodi.