Specifies whether the input file is to be opened for sharing with
    other processes during the conversion.
    Format
      /SHARE
      /NOSHARE  (DEFAULT)
    You can use the /SHARE option to generate a rough backup of a
    file that is always opened for sharing by some applications.
    However, another process can alter the records during the Convert
    utility operations. As a result, the consistency of the output
    file cannot be guaranteed.