/sys$common/syshlp/helplib.hlb CONVERT, /DOCUMENT, Valid Conversions  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    You can convert an input file to an output file that is of the
    same type: document, tabular, graphics, or image. The DDIF and
    Text converters support conversion between document file formats.
    The DTIF converters support conversion between tabular file
    formats.

    The Analysis output converter is a special type of document
    converter that produces formatted text output of the objects and
    values stored in the in-memory DDIF or DTIF format of an input
    file.

    The PostScript output converter also is a special type of
    document converter that supports conversion between all revisable
    file formats and final-form PostScript output.

    You can convert a tabular input file format to a document output
    file format. The domain converter provides this capability.

    You can convert a graphics or image input file to a compound
    document output file format that supports graphics and image
    elements.

    You can convert a compound document input file containing
    graphics or images to a graphics or image output file,
    respectively, but any text in the file is lost.

    If the Compaq CDA Converter Library or other third-party
    converters are installed, you can convert files among other
    popular file formats in addition to those supported by the
    CDA Base Services converters.