Values for the rel attribute of the link and a elements.

General Purpose about URI designating a document containing profile data —self-introduction, curriculum vitæ or portfolio— for the owner or subject of the current site. weblog URI designating a document that is the home page —or any other page— of the weblog related to the current site. calendar URI designating a document containing a calendar or a schedule status table. contact URI designating a document containing location addresses, e-mail addresses, telephone and FAX numbers, area maps and other contact information for the current site or its owner or subject. e-mail URI designating a document containing an e-mail feedback form. faq URI designating a document containing answers to frequently asked questions. guide URI designating a document containing system guidance information —such as schedule details or house rules. sitemap URI designating a document containing a site map or a site index. It is identical to the standard contents value and its sole purpose is to allow more than one “table of contents” type of links inside multilingual index pages or portals. meta URI designating a document —in RDF/XML format— containing information about the respective Web page, including the Dublin Core elements DC:title, DC:description, DC:subject, DC:format, DC:language, DC:creator, DC:publisher, DC:rights, and DC:date. It may also designate a FOAF document. XFN Supplements client URI designating a document representing —designed, managed or owned by— a customer or someone for whom you did or are doing (a) certain service(s) for which you receive(d) payment. Possibly symmetric. Possibly transitive. Can be an inverse of supplier. reference URI designating a document representing —designed, managed or owned by— a person, organization or any other type of entity whom you used, are using or will use as a reference for your work or whose activity results or products were, are or will be resources which you consider a reference for your work. Not symmetric. Not transitive. supplier URI designating a document representing —designed, managed or owned by— an organization or someone from whom you bought or are buying (a) certain hardware product(s) for which they receive(d) payment. Possibly symmetric. Possibly transitive. Can be an inverse of client. XHTML Standard Link Types RDF (Resource Description Framework) Dublin Core Metadata Element Set 1.1 RSS (RDF Site Summary) 2.0 Specification URI (Uniform Resource Identifiers) Generic Syntax W3C (World Wide Web Consortium) XFN (XHTML Friends Network) XMDP (XHTML Meta Data Profiles) FOAF (Friend Of A Friend)