``Setting'' the archived bit is a little bit symbolic since TOS 1.4 is introduced. The introduction of TOS 1.4 inverted the meaning of the archived bit. Before TOS 1.4 the bit was set to ``1'' to indicate the file was archived. Before TOS 1.4 this bit was automatically cleared by the OS once the file was changed. Since the introduction of TOS 1.4 this bit is set to ``0'' to indicate the file is archived. In TOS 1.4 this bit is set to ``1'' by the OS if the file is changed. BackupST will automatically adjust its behavior to the present TOS version.