Fort Mississauga was secured with the standard-at-the-time-for-fortifications thick wooden doors "decorated" with iron studs, which were intended to blunt whatever sharp implements an attacker might utilize to hack their way in. One thing I noted in Canada is that the writers of historical signage, or really any kind of signage, have it easy: They only have to write half as much text as American sign-writers, because everything in Canada has to be repeated in French!