This element should appear inside a conditions element. A rule's conditions should contain one and only one content element. The content element should also have a uri attribute. It is used to bind a variable to a content node during matching.

Properties and Methods inherited from XUL Element

Used to specify the variable name for the content. When a rule is evaluated, it scans through each resource in the RDF datasource looking for a match. Each resource is placed in the variable specified in the uri attribute in turn. Then, the other rules are evaluated for a match. This attribute should always be present.