An RDF Schema that can be used to attach constraints and rules to RDFS classes, and to encapsulate reusable SPARQL queries into functions and templates. @en
(2014-06-17) Bernard Vatant: Fixed version dates, and added link to documentation. SPIN is a W3C Member Submission 22 February 2011, updated 18 June, 2013.
(2014-09-02) Bernard Vatant: Record updated with new version.
(2016-01-04) Ghislain Atemezing: SPIN has an updated candidate submission on 07 November, 2014.
