CHAPTER 7    SAD TO FITS TRANSFER
                The program SADFITS transfers an image from the SAD disk file
            format to the FITS tape file format.
            To run the program:
                        $MOUNT/FOREIGN MTXX:
                        $SADFITS
            The program then asks
                'Is tape to be initialized (Y or N)?'
            If the answer  is  'Y'  the  data  is  written  starting  at  the
            beginning  of tape (any data on the tape is overwritten).  If the
            answer is 'N' the tape is positioned at the end-of-tape (two file
            marks) and the data written there.
            The program then prompts for the name of the input file:
                ' SAD file name ( to open a new file):'
            Transferring maps from the file is continued until a  map  number
            of zero is requested, when the program asks for a new file name.