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The DITA Architecture area contains references to specifications and articles that explain the architectural underpinnings of the DITA language.
This introduction to the DITA Architecture contains overall technical information about the DITA language and its architecture.
In the DITA architecture, DITA topics are organized by DITA maps. It is also possible to nest sub-topics within a topic. Specialization enables the creation of specialized topics and other units of content that are tailored to particular structural requirements. Content referencing (conref) enables fragments of content to be reused from a single source. Conditional processing permits a single source to support the needs of multiple audiences.
The current version of DITA is specified in the OASIS Darwin Information Typing Architecture (DITA) Standard v1.2. The OASIS DITA Technical Committee is currently working on version 1.3.
The OASIS site http://www.oasis-open.org/specs/index.php#ditav1.2 contains the official versions of the following documents:
The following article provides additional information:
Introduction to the Darwin Information Typing Architecture - IBM developerWorks, 01 Mar 2001, Updated 28 Sep 2005
This document is a roadmap for DITA: what it is and how it applies to technical documentation.
Editors for the Architecture area:
Technical work produced by the OASIS DITA Technical Committee includes:
The compressed file dita-document-definitions-1.0.1.zip contains version 1.0.1 of the DITA DTDs and Schemas. Version 1.0.1 contains all of the fixes described in this document: Fixes for OASIS DITA 1.0. It also contains a change document 101changes.txt (one for the DTDs, and another for the Schemas). These files list all actual bug changes, including the changed catalog for DTDs. They also contain a pointer to the web page above for a full description of the changes.
A consolidated zip file with all specifications, DTDs, and Schemas is publicly available in the documents section dita10.zip.
This document is revision #4 of cd1.zip. The document details page shows the complete revision history.
The first committee draft (before revision), cd1.zip is still available in the Documents section.
What's new in DITA 1.1:
Version 1.1 of DITA provides enhanced print publishing capabilities with new DITA Bookmap specialization, including extended book metadata. The standard offers more indexing capabilities with new elements for "see" and "see-also" references. It features new elements for defining structured metadata as well as the ability to add new metadata attributes through specialization.
The specification files (HTML and PDF Spec documents, DITA source, DTDs and Schemas) are available here:
http://www.oasis-open.org/committees/tc_home.php?wg_abbrev=dita#technical
The Overview is a great entry point into the various parts of the DITA 1.1 standard:
http://docs.oasis-open.org/dita/v1.1/OS/overview/overview.html
Previous versions of the DITA specification