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All major web browsers currently have a tag soup parser for interpreting malformed HTML, with most error-handling elements standardized. "Tag soup" encompasses many common authoring mistakes, such as malformed HTML tags , improperly nested HTML elements , and unescaped character entities (especially ampersands (&) and less-than signs (<)).
The data set is specified in Module:Lang/data and its included data modules: . language tag-and-name data Module:Lang/data/iana languages – from IANA language-subtag-registry file
The Template Attribute Language (TAL) is a templating language used to generate dynamic HTML and XML pages. Its main goal is to simplify the collaboration between programmers and designers. This is achieved by embedding TAL statements inside valid HTML (or XML) tags which can then be worked on using common design tools.
The language for an element should be specified with a lang attribute rather than the XHTML xml:lang attribute. XHTML uses XML's built-in language-defining functionality attribute. Remove the XML namespace (xmlns=URI). HTML has no facilities for namespaces. Change the document type declaration from XHTML 1.0 to HTML 4.01.
For these reasons, and in support of a more semantic web, attributes attached to elements within HTML should describe their semantic purpose, rather than merely their intended display properties in one particular medium.
This category is hidden on its member pages—unless the corresponding user preference (Appearance → Show hidden categories) is set.; These categories can be used to track, build and organize lists of pages needing "attention en masse" (for example, pages using deprecated syntax), or that may need to be edited at someone's earliest convenience.
In data sanitization, HTML sanitization is the process of examining an HTML document and producing a new HTML document that preserves only whatever tags and attributes are designated "safe" and desired. HTML sanitization can be used to protect against attacks such as cross-site scripting (XSS) by sanitizing any HTML code submitted by a user.
The value of the statement, in either case, is contained in the content attribute, which is the only required attribute unless charset is given. charset is used to indicate the character set of the document, and is available in HTML5. Such elements must be placed as tags in the head section of an HTML or XHTML document.