ITS had no file permissions, but even before PWORD was installed to keep randoms from the network away there were means of keeping the turists out when the syst

ITS had no file permissions, but even before PWORD was installed to keep randoms from the network away there were means of keeping the turists out when the system was to be reserved for Real Work. Other parts of the system that were considered sensitive were hidden behind undocumented commands or program-level passwords - For example, the innards of INQUIR, since the INQUIR database determined who was to be excluded and who was not. There may have been no file permissions, but there was a definite hierarchy of users that was enforced by other (generally more subtle) means.