HTML 4.0 Specification
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| HTML 4.0 Specification | |
|---|---|
| Name | HTML 4.0 |
| Developer | World Wide Web Consortium; contributors from Mosaic Communications Corporation; Netscape Communications Corporation; Microsoft Corporation |
| Released | 1997 |
| Latest release | 4.01 (1999) |
| Written in | SGML |
| Genre | Markup language |
HTML 4.0 Specification
HTML 4.0 Specification is a W3C World Wide Web Consortium recommendation defining a version of the Hypertext Markup Language standardized in 1997, with follow-up revisions culminating in HTML 4.01. It served as the prevailing specification during the era of Netscape Navigator, Internet Explorer, and the dot-com expansion involving companies like Yahoo! and Amazon (company). The specification influenced implementations by Opera Software, AOL, and academic projects at institutions such as MIT and Stanford University.
Overview
HTML 4.0 defined elements, attributes, and document models for authoring web pages used by browsers including Netscape Navigator and Internet Explorer while interacting with web servers like Apache HTTP Server and application frameworks from Microsoft Corporation and Sun Microsystems. The specification emphasized compatibility with standards bodies such as the Internet Engineering Task Force and conformance testing performed by organizations like W3C and research groups at Bell Labs, Lawrence Berkeley National Laboratory, and CERN. It codified language features that influenced projects by GNU Project, Free Software Foundation, and companies like IBM.
History and Development
The development of HTML 4.0 involved stakeholders from World Wide Web Consortium, browser vendors including Netscape Communications Corporation and Microsoft Corporation, and contributors from academia such as University of Cambridge labs and University of California, Berkeley. Milestones included W3C working group drafts, editorial input from figures associated with Tim Berners-Lee at CERN, and discussions at conferences like the International World Wide Web Conference. Corporate negotiation among Sun Microsystems, Oracle Corporation, and independent projects from Mozilla Foundation shaped the specification’s scope.
Features and Changes from HTML 3.2
HTML 4.0 introduced structured document models influenced by standards bodies like ISO and ANSI, added support for Cascading Style Sheets authored by contributors associated with Håkon Wium Lie and Bert Bos, and formalized character encodings referenced by Unicode and implementers such as Microsoft Corporation. New support for scripting referenced implementations of ECMAScript from Ecma International and APIs leveraged in Netscape Navigator and Internet Explorer. Multimedia and object integration accommodated technologies from RealNetworks, Macromedia (later Adobe Systems), and plugin ecosystems used by QuickTime and Windows Media Player.
Document Structure and DTDs
HTML 4.0 defined three document type definitions (DTDs) — Strict, Transitional, and Frameset — a model influenced by SGML and standards overseen by ISO committees and practice from CERN. DTDs affected processing in servers like Apache HTTP Server and validators operated by W3C and academic validators from MIT. The document model referenced character standards such as ISO/IEC 10646 and interoperability considerations discussed at meetings involving IETF working groups and corporate engineers from IBM and Microsoft Corporation.
Deprecated Elements and Backward Compatibility
HTML 4.0 deprecated presentation elements and attributes in favor of separation of content and style championed by advocates including Håkon Wium Lie and organizations like W3C; this affected practices used in pages created with editors from Microsoft FrontPage and Adobe PageMill. Deprecated features included numerous presentational tags that older browsers from Netscape Communications Corporation and legacy tools from AOL still supported, prompting compatibility discussions at forums such as the World Wide Web Conference and committees involving Sun Microsystems and Oracle Corporation.
Implementation and Browser Support
Major browser implementations by Netscape Communications Corporation, Microsoft Corporation, and Opera Software each implemented different subsets of HTML 4.0 features, leading to interoperability testing performed by teams at W3C, web developers from companies like Amazon (company) and eBay, and compatibility reports produced by publications such as Wired (magazine) and ZDNet. Server-side platforms including Microsoft ASP.NET, PHP, and JavaServer Pages integrated with HTML 4.0 output patterns; client-side scripting compatibilities referenced implementations of ECMAScript and DOM APIs standardized in coordination with W3C.
Legacy Impact and Transition to XHTML/HTML5
HTML 4.0’s emphasis on structure, standards, and DTDs influenced subsequent work by W3C leading to XHTML and later the development of HTML5 under the guidance of the WHATWG and contributors from Mozilla Foundation, Apple Inc., and Google LLC. The transition involved specification efforts intersecting with initiatives from IETF and corporate engineering groups at Microsoft Corporation and Opera Software, and affected publishing workflows at organizations such as The New York Times and BBC. HTML 4.0’s legacy persists in modern parsers, authoring tools from Adobe Systems and Microsoft Corporation, and educational curricula at universities including MIT and Stanford University.