DocBook is a very popular set of SGML and XML markup document type definitions (DTD) designed for the production of technical documentation in the form of articles, manuals, books, help files. DocBook document type definitions include elements for prose writing, and the names of most elements are very clear. DocBook files can be converted to printable formats or transformed into HTML Web pages easily with free software.

In the DTD, XML element attributes are declared with an ATTLIST declaration. An attribute declaration has the following syntax:

In its presentation of historical collections, the Library of Congress uses Standard Generalized Markup Language (SGML) for two types of documents: finding aids and the full texts of books, pamphlets, manuscripts, and other historical texts. Examples of finding aids that conform to the emerging standard for Encoded Archival Description are available online. Marked-up pamphlet, broadside, manuscript, and book texts are available for a number of collections; see, for example, the National American Woman Suffrage Collection or the George Washington Papers.

Infrequently Asked Questions Concerning the Proper Spelling of 'DTD' in its Plural Form.

The logical markup of SGML documents makes it possible to transform the markup associated to a DTD into that of another. When translating the markup one has to take into consideration the fact that between some elements a one-to-one mapping may not exist, but that a many-to-one, and one-to-many correspondence has to be considered. It should also be noted that the tools used for this purpose need to be sophisticated, since a normal grammar tool, such as yacc, is not suitable for parsing SGML documents.

This is Michael Kay's Java-based DTD Generator attached to a frontend (a Python script by Paul Tchistopolski) in an easy to use online version.

We use the NekoDTD tool packaged as a Cocoon Generator to generate automagically some hyperlinked DTD references. Note that these references do not reflect the modularity of our DTDs, they are primarily user-oriented.

See the Sun Microsystems web site for description of the XMLspec DTD: "The XMLspec DTD was originally designed to be used to encode the XML specification document itself, even before the first XML processor existed! It was probably one of the first XML DTDs to be fully compliant with the XML specification, to be used in a collaborative authoring situation, and to drive the generation of multiple different outputs from the same source.

The ArchStudio project under development in the Department of Information and Computer Science, University of California, Irvine has created xADL as for its "enabling architecture-centric tool integration with XML." ArchStudio 2.0 is "an extensible, integrated software architecture development environment that uses an XML-based representation for the underlying architecture.

JRefEntry DTD. From Norman Walsh, The JRefEntry DTD is a customization of the DocBook RefEntry model. The purpose of this customization is to mirror the order and nature of structured comment tags in JavaDoc documentation. See the README. The version 1.0 distribution [JRefEntry DTD V1.0] of the JRefEntry DTD consists of the following files: [1] README.xml (The README file); [2] jrefentry.dtd (The DTD); [3] test.xml (A test document).

A posting from James Clark to the XML-DEV List announces a new release of Trang, Clark's Multi-Format Schema Converter based on RELAX NG. The conversion tool supports several schema languages for XML, including RELAX NG (XML syntax), RELAX NG compact syntax, XML 1.0 DTDs, W3C XML Schema.

Short for document type definition. A DTD states what tags and attributes are used to describe content in an SGML, XML or HTML document, where each tag is allowed, and which tags can appear within other tags. For example, in a DTD one could say that LIST tags can contain ITEM tags, but ITEM tags cannot contain LIST tags. In some editors, when authors are inputting information, they can place tags only where the DTD allows. This ensures that all the documentation is formatted the same way. Applications will use a document's DTD to properly read and display a document's contents. Changes in the format of the document can be easily made by modifying the DTD.

First Call Corp., a Thomson Financial company, and B-Bop, The XML Platform Company, today released a jointly created 'FAML' Document Type Definition (DTD) for financial research documents utilizing Extensible Markup Language (XML). This FAML DTD for 'Financial Research Documents' ("-//B-Bop Associates//DTD FAML v1.0//EN") provides an initial framework for structuring the content of such documents.

This is a list of the DTD quick reference.

This is a collection of notes for configuring the Catalog Entity Resolver with your favourite XML tools (validating parsers and editors). All XML documents declare their ruleset - the Document Type Definition (DTD). When Forrest processes the documents, it uses the Resolver to find Forrest's local copies of the DTDs, rather than trundling out onto the network.

This is a list of useful DTD/XML schema links.

The XML version of the movies database should contain 7 XML files, with their corresponding dtd files. The intent is to eventually also have them available in .rdf form for the DAML Ontoagents project. Background about these files is found on a documentation file for the earlier TeX and HTML versions.

This short document details the first attempt of XML usage for tabular output description following the Strasbourg meeting June 23-25, 1999, and discussions since that time. This proposition was presented at the IXth ADASS Meeting in October 1999 at the Hilton Waikoloa Village, Hawaii

"ONIX International is the international standard for representing and communicating book industry product information in electronic form, incorporating the core content which has been specified in national initiatives such as BIC Basic and AAP's ONIX Version 1. Release 1.1 is the first full release of ONIX International, and incorporates the results of practical trials and extensive review in both the US and the UK during June 2000.

Publishers, aggregators, syndicators and other content companies are now ready to exchange content for secondary licensing using a standardized XML format -- the newly released PRISM specification, the PRISM Aggregator DTD (Document Type Definition) Version 1.0.