rel Attributerel AttributeThe rel attribute specifies the (forward) relationship from the
current document to the resource specified by the href attribute
of a link (created using either an a
or a link element).
For example, for a link element,
rel="stylesheet" specifies that the linked resource is a stylesheet for the current document.
If desired, a space separated list of relationships may be given. For more information, refer to the LinkTypes attribute type.
See also the rev attribute.