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

    Format: NEW [filename]

    Creates a new message. If a file is not specified, you are prompted
    for a file name. The default text editor will then be invoked to add
    the text portion of the message. Use the ADD and REMOVE command to
    add MIME encoded attachments, such as images or sound files.