What is sgml wiki

Some SGML tools may also require input in full normalized form. The script html-spam provides a simplified interface to the sp normalizer spam. See the gf info pages for usage.

Editing with psgml psgml is an emacs major mode for editing SGML. Since psgml is driven by the SGML DTD, it actually knows what elements and attributes are valid at any point in your document, can normalize your document, and can find "trouble spots".

To use psgml mode for HTML, add something like this to your. To put it in other words, criticism is good but contributions are better. Untangle the SGML syntax by describing each production. I think you can name it "computer archaeology" ;- as the world is evolving there is no practical interest behind this topic.

This is an overwhelming task, but IMHO it's worthwhile and amusing? Most of SGML-related web resources which were available some years ago by now are gone, and I think the English Wikipedia is not the right place for recreating this material at least, until we can assure its quality.

As a document markup language, SGML was originally designed to enable the sharing of machine-readable large-project documents in government, law, and industry. Many of these documents must remain readable for several decades — a long time in the information technology field.

SGML also was extensively applied by the military, and the aerospace, technical reference, and industrial publishing businesses. According to the revised Terms and Definitions of IS from the public draft :. Note: A user may wish to enforce additional constraints on a document, such as whether a document instance is integrally-stored or free of entity references.

An SGML document in which, for each document instance, there is an associated document type declaration to whose DTD that instance conforms. An SGML document, all of whose document instances are fully-tagged. There need not be a document type declaration associated with any of the instances. Note: If there is a document type declaration, the instance can be parsed with or without reference to it. Integrally stored supports the XML requirement that elements end in the same entity in which they started.

Reference-free supports the HTML requirement that entity references are for special characters and do not contain markup. The SGML emphasis on validity supports the requirement for generalized markup that markup should be rigorous. ISO A. An SGML document may be composed from many entities, discrete physical parts. In SGML, the entities and elements types used in the document may be specified with a DTD, the different character sets, features, delimiter sets, and keywords are specified in the SGML Declaration to create the concrete syntax of the document.

The XML specification s4. Physically, the document is composed of units called entities. An entity may refer to other entities to cause their inclusion in the document.

A document begins in a "root" or document entity. Logically, the document is composed of declarations, elements, comments, character references, and processing instructions,. The following material concentrates on features that are additional to those found in XML and are not a comprehensive summary of SGML syntax. SGML was developed to generalize and support a wide range of markup languages as found in the mid s.

SGML did this by a relatively simple default reference concrete syntax augmented with a large number of optional features that could be enabled in the SGML Declaration. Many of the features related to markup minimization. The notion of customizable features was not appropriate for use over the WWW, so a goal of XML was to reduce optional features to a minimum. However in making its well-formedness rules, XML does not have capabilities to support the declaration and parsing of Wiki-like languages, leaving them unstandardized and difficult to integrate with non-text information systems.