Link types: bookmark, index, glossary, copyright, index..

Authors may use the following recognized link types, listed here with their conventional interpretations. In the DTD, %LinkTypes refers to a space-separated list of link types. White space characters are not permitted within link types.

These link types are case-insensitive, i.e., “Alternate” has the same meaning as “alternate”.

User agents, search engines, etc. may interpret these link types in a variety of ways. For example, user agents may provide access to linked documents through a navigation bar.

Alternate
Designates substitute versions for the document in which the link occurs. When used together with the lang attribute, it implies a translated version of the document. When used together with the media attribute, it implies a version designed for a different medium (or media).
Stylesheet
Refers to an external style sheet. See the section on external style sheets for details. This is used together with the link type “Alternate” for user-selectable alternate style sheets.
Start
Refers to the first document in a collection of documents. This link type tells search engines which document is considered by the author to be the starting point of the collection.
Next
Refers to the next document in a linear sequence of documents. User agents may choose to preload the “next” document, to reduce the perceived load time.
Prev
Refers to the previous document in an ordered series of documents. Some user agents also support the synonym “Previous”.
Contents
Refers to a document serving as a table of contents. Some user agents also support the synonym ToC (from “Table of Contents”).
Index
Refers to a document providing an index for the current document.
Glossary
Refers to a document providing a glossary of terms that pertain to the current document.
Copyright
Refers to a copyright statement for the current document.
Chapter
Refers to a document serving as a chapter in a collection of documents.
Section
Refers to a document serving as a section in a collection of documents.
Subsection
Refers to a document serving as a subsection in a collection of documents.
Appendix
Refers to a document serving as an appendix in a collection of documents.
Help
Refers to a document offering help (more information, links to other sources information, etc.)
Bookmark
Refers to a bookmark. A bookmark is a link to a key entry point within an extended document. The title attribute may be used, for example, to label the bookmark. Note that several bookmarks may be defined in each document.

Authors may wish to define additional link types not described in this specification. If they do so, they should use a profile to cite the conventions used to define the link types. Please see the profile attribute of the HEAD element for more details.

For further discussions about link types, please consult the section on links in HTML documents.

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