Even if a tag <BASE> allows finding a file, question on relations between documents is still opened. Importance of these relations grows proportionally to growth of complexity of your documents. To support logic connection between them, in HTML the tag is entered <LINK>.

Tag <LINK> specifies connection of the document containing the given tag and other document or object. It will consist of the URL-address and parameters, defining attitudes(relations) of documents. The heading of the document can contain any amount of tags <LINK>.Tab. 1.1 describes parameters of a tag<LINK>and their functions.

Table 1.1. Parameters of a tag <LINK>

Parameter	Purpose
HREF	Specifies the URL-address of other document
REL	Defines the relation between current and other document
REV	Defines the relation between other document and current (the relation, the opposite REL)
TYPE	Specifies type and parameters of the attached table of styles

Let's result examples of a tag<LINK> with parameters:

<LINK REL="contents" HREF ="../toc.html">

<LINK HREF="mailto:john@yahoo.com" REV="made">

The first line specifies connection with a file of a table of contents of the document (toc.html — table of contents) with the direct relation contents. The second line describes connection with the URL-address of the author of the document (with the return relation made).

Between documents there can be a set of various relations. Examples of other values of parameter REL: bookmark, copyright, glossary, help, home, index, toc, next, previous. Parameter REV can accept values also: author, editor, publisher and owner.