Possible values: space-separated list of datasource URIs
Type: space-separated list of datasource URIs
A space-separated list of datasources that an element's template will use for content generation. These can be either internal datasources such as rdf:bookmarks or a URL of an RDF file. The datasources attribute may be placed on most elements, although it will usually be found on trees and menupopups. The element should have a template element as a child.
The specified datasources are combined into a single composite datasource which holds the data from all of the datasources. This composite datasource is accesssible via a script through the database property.
If you plan on adding a datasource to an element but don't want one to be added right away, set this attribute to 'rdf:null'. This will make the element so that its contents can be generated from a datasource. Otherwise, you cannot add one later.