Library /sys$common/syshlp/tcpip$ftp_help.hlb PUT, Qualifiers, /FDL  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Optional. Default: no secondary file created. The /FDL qualifier
    must follow immediately after the PUT command without a space.

    Creates a secondary file with the file's OpenVMS record
    attributes. The SET TYPE command determines the type of file:

    o  Specifying ASCII results in a sequential file with variable
       records. Select this type when transferring ASCII text files.

    o  Specifying IMAGE results in a sequential file with fixed
       records of 512 bytes. Select this type when transferring
       non-ASCII files such as executable image files.