DDIS(5)DDIS(5)NameDDIS - Digital Data Interchange Syntax / ISO ASN.1 (DDIS/ASN.1) files
DescriptionDDIS is an ASN.1 syntax that conforms to the specifications of Interna‐
tional Standards Organization Abstract Syntax Notation One (ISO ASN.1).
Digital's CDA architecture defines two document formats and a mail syn‐
tax 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
· 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
For more information on CDA enabling technologies and the DEC CDA Run-
Time Services, refer to the CDA manpage.
See Alsocdoc(1), ctod(1), ddifanls(1), ddifps(1), ddiftext(1), dtifanls(1),
dtifddif(1), dtoc(1), dxvdoc(1X), textddif(1), vdoc(1), CDA(5),
cda_msg(5), DDIF(5), DOTS(5), DTIF(5), dvr_msg(5)DDIS(5)