This is sometimes called a forward link. Although the HREF="..." HTML tag attribute is normally the only means used to identify a target document, the browser is permitted to use the REL="..." HTML tag attribute to decide whether to use the HREF value or how it should be used.

The following HTML version 4.0 standard link types are permitted in this property:

• alternate

• appendix

• bookmark

• chapter

• contents

• copyright

• glossary

• help

• index

• next

• prev

• section

• start

• stylesheet

• subsection

MSIE adds these as well:

• same

• next

• parent

• previous

When used or tested within a script, any comparisons should be case insensitive.