Format: READ

    Displays the currently active MIME message as readable text with
    attachment markers.

    If the MIME message is not active, an error message is displayed. A
    message is active once it has been opened with the OPEN or NEW commands.

    Any non-textual attachments (such as .JPG images), must be read by helper
    viewer applications. The MIME utility will automatically invoke these
    viewers, if they are defined in the MIME$MAILCAP.DAT file with their
    respective content type and subtype. A SHOW CONTENT_TYPE command will
    display the current viewer applications and types defined for the system.

    For more information, see the SHOW CONTENT MIME$MAILCAP.DAT command,
    the HELP Overview, HELP OPEN, and HELP NEW commands.