The REWIND statement has the form
REWIND device-number
and causes input/output to the device device-number to continue from the first record position on that device.
This allows re-reading of data in sequential files, and is also used with magnetic tape.
The BACKSPACE (go back one record) and END_FILE (go just after the last existing record) statements, having the same syntax, are likely to be available only for magnetic tape.