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A link relation is a descriptive attribute attached to a hyperlink in order to define the type of the link, or the relationship between the source and destination resources. The attribute can be used by automated systems, or can be presented to a user in a different way. In HTML these are designated with the rel attribute on link, a, or area ...
Web site owners who do not want search engines to deep link, or want them only to index specific pages can request so using the Robots Exclusion Standard (robots.txt file). People who favor deep linking often feel that content owners who do not provide a robots.txt file are implying by default that they do not object to deep linking either by ...
Effectively namespaces web-based protocols from other, potentially less web-secure, protocols This convention is defined within the HTML Living Standard specification web+ string of some lower-case alphabetic characters :
The text between < html > and </ html > describes the web page, and the text between < body > and </ body > is the visible page content. The markup text < title > This is a title </ title > defines the browser page title shown on browser tabs and window titles and the tag < div > defines a division of the page used for easy styling.
When the primary resource is an HTML document, the fragment is often an id attribute of a specific element, and web browsers will scroll this element into view. A web browser will usually dereference a URL by performing an HTTP request to the specified host, by default on port number 80.
A canonical link element is an HTML element that helps webmasters prevent duplicate content issues in search engine optimization by specifying the "canonical" or "preferred" version of a web page. It is described in RFC 6596, which went live in April 2012.
External links use URLs to link directly to any web page. External links are enclosed in single square brackets (rather than double brackets as with internal links), with the optional link text separated from the URL by a space (not a "|" as with internal links). When rendered, external links are followed by an external link icon. For example,
The Maritime and Commercial Court in Copenhagen took a somewhat different view in 2005 in a suit that home A/S, a real estate chain, brought against Ofir A-S, an Internet portal (OFiR), which maintains an Internet search engine. home A/S maintains an Internet website that has a searchable database of its current realty listings.