![]() In SGML, undeclared markup is simply an error. Lack of browser support have made that markup practically unused.)īut this is not compatible with the ideas of SGML. In HTML 4, the abbr markup was added, but semantic ambiguities and (Quite often authors simplyįorget to provide any "fallback" content, or provide worse than Language design and in using the language. Sounds fine, and it is fine when done properly, both in Such extensibility, with "graceful degradation", (which might, for example, be optionally displayed as a "tooltip")Īnd non-supporting browsers would ignore the tags and use just the The tags and attributes that they don't "understand".įor example, assume that new markup would be added for indicatingĪ word as an abbreviation and providing its expansion The idea that new tags could be added and Is that HTML was intended to be extensible, according to The problem with using SGML as the syntactic metalanguage for HTML The idea of HTML as an "SGML application" was never much more than The resignated though euphemistic statement in the HTML 4 specificationĪbout lack of support to several SGML features in browsers. "White Space Bugs" which have been so frustrating to so many authors, and Rules of SGML this is well illustrated by the Of the language they use, and if authors are enlightened enough to useĪ validator, they'll suffer from problems with HTML validators, among other things.Īll popular browsers fail to process HTML documents according to the fundamental Now the vast majority of HTML authors remains ignorant of the detailed syntax Its manifestation in SGML was not,Īt least not for the purposes of creating a universal markup language for the No, this idea, presented well in Annex A of Markup, or, to use the confusing SGML terminology, "generalized markup" as opposite to HTML a structured markup language as opposite to physical (layout, presentation) ![]() HyperText Markup Language Activity Statement HTML documents are SGML documents with generic semantics that are appropriate for representing information from a wide range of domains. The HyperText Markup Language (HTML) is a simple data format used to create hypertext documents that are portable from one platform to another. Might take place in details and in special areas, the original "vision" will be lost more Orienting towards "XML based HTML" (XHTML) So now we have a huge amount of messed-up HTML markup. Isn't a great tool for the presentationalists, and it never did good to the structure. Oriented towards visual design were able to use font markup,īackground colors, tables for layout, and various hacks but presentational HTML Ways that made many people happy but not anyone really happy. Structural, with some strange presentational features. In many ways, it was designed as a hybrid of a structured markup languageĪutomatic translation, and other technologiesīeyond mere display of documents were not anticipated. ![]() It was developed in a pragmatic way, often in a brutely pragmatic way,Īnd this contributed to its success, and its failure. HTML was partly not simple enough, partly it was too simple. So how come it couldn't work on small portable devices with relatively advancedĭisplay technology? From simplicity to "features" ![]() ![]() The original enthusiasm at W3C declared that HTML documents can be presented not only inĭevices, and even for Braille renderings. Ostensibly by the fact that it was declared unsuitable for But HTML is also a great failure, demonstrated Is an important part thereof, despite its simplicity, and largelyĭue to its simplicity. The World Wide Web is a great success story, and the HTML language What can we learn from the great success, and the great failure? ![]()
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