Members should exercise caution when editing files, since files may be accessed by more than one member simultaneously. For each project group, a Unix group and shared directory are created, with the students added as members of the group. Files are owned by the group and file permissions are set such that each member of the group has full control for all of the files. There is no provision made for file locking. Any new files created are owned by the user until the next night, when ownership is transferred to the group.
Groups have disk quotas and users have a daily disk quota.