XHTML 1.0 is an SGML defined form of the HTML language with some extended requirements to gleam progressive compatibility towards XML syntax. As time went on, additional features were added to HTML 5 that enriched still more its use for data display/use to the point that it is unlikely to ever be superseded by new XHTML versions, at least as far as display of data concerned. text, images, audio, etc. ISO 8879 Annex A.1 states that generalized markup is "based on two postulates":. Some notes on how the HTML 5 Standard works with other specifications. Learn more about Stack Overflow the company It seemed to be about to replace HTML as commonest way to display web material - until HTML 5 came out. Although XML seems to be commonly used one.For XHTML and HTML you are probably better off always using XHTML. (3) What differences are between saying one language is an application of another, and one language is a subset of another?There are documents that conform with both XML and HTML; there are documents that conform with XML and not HTML, and there are documents that conform with HTML and not XML. SGML vs XHTML. HTML exploited SGML's allowing some elements to omit start- or end-tags. Back in the late 90s when I started, we were using HTML 3.2 which allowed for seriously sloppy code. language but a metalanguage for designing markup languages?Are SGML and XHTML both also metalanguage for designing markup Subsets of XML include XSL and XSLT. XHTML came afterwards.Thanks! They are all different. Software Engineering Stack Exchange works best with JavaScript enabled XML actually has just about nothing to do with HTML or XHTML...it serves a different purpose. As in both links mention that HTML is an applicaiton of SGML as well as a subset of SGML, and XHTML is an application of XML. Declarative: Markup should describe a document's structure and other attributes rather than specify the processing that needs to be performed, because it is less likely to … Generally in the standards world, a "profile" of a standard is a selection of options that the standard offers: for example, if the standard allows documents to be encoded in UTF-8 or UTF-16, a profile of the standard might require them to be encoded in UTF-8. HTML consists of elements, these elements define the structure of HTML pages. HTML consists of a set of markup tags with specific meanings. XML makes it mandatory to use a closing tag. 7) HTML is static because it is used to display data. Understanding HTML and SGML. It has become an international standard in specifying the description of the type and content of digital documents. Anybody can answer I wonder what differences are between saying one language is an application of another, and one language is a subset of another?Thanks! Using HTML, you can embed images, create page sections, establish fonts, and direct the flow of the page. . Philosophically, this story shows how an essential enabling tool (SGML) for a new technology (internet) can, in the new environment with increasingly varied demands, outgrow its original limits yet become conceptually simpler, applicably more versatile and impactfully more powerful. SGML and HTML, both are computer programming languages.

XML is simply a data formatting markup language. The primary difference would be HTML is a subset of SGML. "html" is not based on any specific serialization standard anymore, it has its own complete serialization.Herein lies the difference: HTML4 has a "sgml" serialization and "xml" serialization (called XHTML 1.0) (1) Are both HTML and XML subsets of XHTML? GML was gradually refined till it was standardized as SGML in 1986.SGML was found overly elaborate for the numerous but smaller-sized document. HTML is a presentation language. language?HTML and XML are both markup languages (hence the *ML).

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