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HTML5 is designed so that old browsers can safely ignore new HTML5 constructs. [8] In contrast to HTML 4.01, the HTML5 specification gives detailed rules for lexing and parsing , with the intent that compliant browsers will produce the same results when parsing incorrect syntax. [ 126 ]
In SGML, HTML and XML documents, the logical constructs known as character data and attribute values consist of sequences of characters, in which each character can manifest directly (representing itself), or can be represented by a series of characters called a character reference, of which there are two types: a numeric character reference and a character entity reference.
Change the XML empty-element syntax to an HTML style empty element (< br /> to < br />). Those are the main changes necessary to translate a document from XHTML 1.0 to HTML 4.01. To translate from HTML to XHTML would also require the addition of any omitted opening or closing tags.
The opening <!DOCTYPE syntax is followed by separating syntax [3]: 403–404 (such as spaces, [3]: 297–298, 372 or (except in XML) comments opened and closed by a doubled ASCII hyphen), [3]: 372, 391 followed by a document type name [3]: 403–404 (i.e. the name of the root element that the DTD applies to trees descending from). In XML, the ...
The W3C HTML 5 spec uses a refinement of this idea, reflecting how the element has historically been used, but now requiring that it contain (but not be limited to) at least one of "the title of the work or the name of the author (person, people or organization) or an URL reference, or a reference in abbreviated form as per the conventions used ...
HTML syntax (web code used to add formatting to text) Rendered output ... HTML5 introduced several new elements; a few examples include the <header>, <footer>, ...
For a more extensive guide please see Help:Table. ... The syntax for caption attributes is: ... but many are deprecated by HTML5.
HTML attributes are special words used inside the opening tag to control the element's behaviour. It is a piece of markup language used to adjust the behavior or display of an HTML element.HTML attributes are a modifier of a HTML element type.