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DDIS(4)
NAME
  DDIS, ddis - Digital Data Interchange Syntax / ISO ASN.1 (DDIS/ASN.1) files

DESCRIPTION
  DDIS is an ASN.1 syntax that conforms to the specifications of
  International Standards Organization Abstract Syntax Notation One (ISO
  ASN.1).

  Digital's CDA architecture defines two document formats and a mail syntax
  for the sharing and transport of revisable compound documents and tabular
  files based on the DDIS syntax that is a subset of ASN.1:

    ·  DDIF (Digital Document Interchange Format) is the interchange and
       application file format for compound documents containing text,
       graphics, images, and audio.

    ·  DTIF (Digital Table Interchange Format) is the interchange and
       application file format for tabular data, such as spreadsheets and
       multi-dimensional tables.

    ·  DOTS (Data Object Transport Syntax) is a transparent interface for the
       transfer of compound documents with external links to multiple
       subfiles via mail systems.

  CDA-supported files that conform to one of the DDIS/ASN.1 family of
  syntaxes are typed according to a particular DDIS/ASN.1 syntax. For
  example, a DDIF file is identified by the file command as a ddis/ddif file.

  For more information on CDA enabling technologies and the DEC CDA Run-Time
  Services, refer to the CDA(4) manpage.

SEE ALSO
  cdoc(1), ctod(1), ddifanls(1), ddifps(1), ddiftext(1), dtifanls(1),
  dtifddif(1), dtoc(1), dxvdoc(1X), textddif(1), vdoc(1), cda(4), cda_msg(4),
  ddif(4), dots(4), dtif(4), dvr_msg(4)