dots.5

<B>Digital的Unix操作系统VAX 4.2源码</B>

.TH DOTS 5
.SH Name
DOTS \- Data Object Transport Syntax (DOTS) files
.SH Description
.NXR "DOTS"
.NXR "Data Object Transport Syntax (DOTS) files"
.NXR "file" "Data Object Transport Syntax (DOTS)"
.NXR "DDIS/ASN.1 encoding"
Data Object Transport Syntax (DOTS) is DDIS/ASN.1 encoding for 
encapsulating the encoded interchange form of a number of related data
objects.  Data objects must be related by having embedded references to
other objects in the same DOTS encapsulation.  Typically,
these embedded references
depend on the storage address (for example, filename) of the
referenced object.  Therefore, when the referenced object is
moved from one location to another, the storage address must be
updated.
.PP
The purpose of DOTS is to allow composite data objects to be
moved from one location to another as a single object and to allow
the necessary storage reference to be updated as part of the process.
.PP
The primary use for DOTS is moving multifile compound documents in
which one DDIF or DTIF file may have reference data stored in a 
physically separate file.  
Mail is a major vehicle for moving DOTS objects.
.PP
The commands
.PN ctod
and
.PN dtoc
are used to pack and unpack DDIF and DTIF files.  The commands can also be
used to copy a related set of DDIF or DTIF files, or both, from one location to 
another.  
.SH See Also
ctod(1), dtoc(1), DDIF(5), DTIF(5), DDIS(5), CDA(5)