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The NOTE also includes an SGML declaration which describes the constraints of XML applicable to an SGML parser. It is also to be expected that some early XML/XLink/XSL applications may be merely demonstrations, toys, proof-of-concept applications; still others might be naive or ill conceived.
[local archive copy] [This paragraph is superseded by the technical NOTE 'NOTE-sgml-xml' referenced immediately above.] Features in SGML but not in XML include [as of November 5, 1996]: "Tag omission; The CONCUR, LINK, DATATAG, and SHORTREF features; The "&" connector in content models; Inclusions and exclusions in content models; CURRENT, CONREF, NAME, NAMES, NUMBER, NUMBERS, NUTOKEN, and NUTOKENS declarations for attributes; The NET construct; Abstract syntax; Capacities and quantities; Comments appearing within other markup declarations; Public Identifiers; Omission of quotes on attribute values." For a more recent/complete comparison of features, see the relevant section in the language specification, or "What else has changed between SGML and XML? As of December 1997, the current and former members of the XML WG are: "Jon Bosak, Sun (Chair); James Clark (Technical Lead); Tim Bray, Textuality and Netscape (XML Co-editor); Jean Paoli, Microsoft (XML Co-editor); C. It may be necessary to regard some of these ideas 'in draft' like some of the specifications documents themselves. [June 30, 1999] A 'TEI Lite DTD in XML' was made available from the TEI Web site.
Such exchange is facilitated by schemas defining the characteristics of classes of objects.
The objects can be syntactic constructs such as are used in XML instances, or may be more abstract such as are found in databases, information models or directed, labeled graphs.
XML was initially "developed by a W3C Generic SGML Editorial Review Board formed under the auspices of the W3 Consortium in 1996 and chaired by Jon Bosak of Sun Microsystems, with the very active participation of a Generic SGML Working Group also organized by the W3C." An XML WG (Working Group) under W3C served initially as an editorial board, which received input from an XML Special Interest Group.
As of late 1998, the XML design effort was re-chartered under the direction of an XML Coordination Group and XML Plenary Interest Group to be carried out in five new XML working groups: XML Schema Working Group, XML Fragment Working Group, XML Linking Working Group (XLink and XPointer), XML Information Set Working Group, and XML Syntax Working Group.
"The Document Object Model is a platform- and language-neutral interface that will allow programs and scripts to dynamically access and update the content, structure and style of documents.
Parsed data is made up of characters, some of which form the character data in the document, and some of which form markup. XML has been designed for ease of implementation and for interoperability with both SGML and HTML." Sources: [see W3C for additional translations] [December 08 , 1997] Extensible Markup Language (XML) 1.0, issued as a W3C Proposed Recommendation. Editors: Tim Bray (Textuality and Netscape), Jean Paoli (Microsoft), and C. Sperberg-Mc Queen (University of Illinois at Chicago). XML WG Chair Jon Bosak clarified the WG's new work focus in light of the publication of this PR.This paper describes an XML vocabulary for schemas.One immediate implication of these ideas is a substantive part of the functionalities of XML document types can now be described using the XML instance syntax itself, rather than DTD syntax.Create an RDF Site Summary (RSS) 0.9 file that describes your content." See description and references in a separate document. In early January 1999, a W3C Working Draft for the Document Object Model (DOM) Level 2 Specification Version 1.0 (WD-DOM-Level-2-19981228) was released.It "defines the Document Object Model Level 2, a platform- and language-neutral interface that allows programs and scripts to dynamically access and update the content, structure and style of documents.