In VSI Fortran, you can specify the following form of the DELETE
  statement when deleting records from a relative file:

    DELETE (u'r [,ERR=s] [,IOSTAT=ios])

    u   Is the number of the logical unit containing the
        record to be deleted.

    r   Is the positional number of the record to be deleted.

    s   Is the label of an executable statement that receives
        control if an error condition occurs.

    ios Is a scalar integer variable that is defined
        as a positive integer if an error occurs and zero if
        no error occurs.

  This form deletes the direct access record specified by r.