Library /sys$common/syshlp/mime$help.hlb OPEN, /DRAFT  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Specifies that the file is a draft of a message that was composed
    previously. This also implies write access to the file, to add or
    remove attachments. Draft files do not contain header information
    such as To:, From:, Cc:, and so forth.

    See the NEW command to create a new MIME message.