Converts documents from one format to another for the purpose
    of sharing information among different applications. Specify the
    input file name and format and the output file name and format as
    shown below.

    The default input and output file format is DDIF (Digital
    Document Interchange Format). DDIF is a standard format for the
    storage and interchange of compound documents, which can include
    text, graphics, and images.

    The CDA Converter Library, a layered product that offers
    conversion among other popular file formats, is separately
    installed and documented. If you have the CDA Converter Library
    Version 2.2 or later installed on your system, see HELP for
    CDA_Converters for more information.

    An /OPTIONS qualifier specifies a file containing options that
    are applied to the input and output file to ensure that minimal
    changes in format and content occur during the conversion.

    A /MESSAGE_FILE qualifier creates a file to which informational
    and error messages are logged during the conversion.

                                   NOTE

       The CDA Base Services for OpenVMS DECwindows Motif or
       later must be installed in order to use the /MESSAGE_FILE
       qualifier and new versions of the CDA Base Services
       converters.

    Format

    CONVERT/DOCUMENT input-filespec/FORMAT=input-format -
      output-filespec/FORMAT=output-format