Re: HTML+ and browser functionality

Tim Berners-Lee (
Wed, 30 Jun 93 17:11:40 +0200

>p.s. Tim's spec seems to have the attribute named "REV" but "REL"
> more appropriate. Any comments anyone?

The HTML spec has *both* REL and REV. Both attributes can be lists
of relationships. The occurence of a relationship in the REV
(reverse) list indicates a relationship in th ereverse direction.
Otherwise, you have to have a convention for indicating logically
reverse relationships (eg is-child; has-child) or some
out of band system for knowing that

A is-parent-of B

implies and is implied b by

B is-child-of A

Is there any document where REV is present withouit REL?