Help:Special property External formatter URI

The External formatter URI property is a special property in Semantic MediaWiki with a built-in meaning: it holds the external URL with a place holder .CiteRef::gh:smw:1708 This place holder   will be replaced during the annotation process with the value of the annotation to generate the external resource identifier. The respective value annotation must be of. It was introduced with and extended with.

See the property page External formatter URI to see which pages use this special property on this wiki.

Example
If you create a property called "Has Wikidata item ID" of datatype and specify an external formatter URI using this special property  when a value annotated to a page with e.g.   will display the value "Q42406391" automatically linked to the respective Wikidata site entry like Q42406391.

Reusing interwiki prefixes
You can reuse an existing interwiki prefix with the fullurl parser function. For example:

External formatter uri::

Multi parameters
An external canonical URL can have different parameters to represent different versions of the content as in case of Wikipedia. In order to pinpoint the version, an additional parameter is necessary. The syntax  supports those additional parameters.

For a property "wikipedia" with:

You can annotate

Thus,  identifies aditional parameters to the external URI and SMW will create a link to: