OSID - osid.OsidConstrainer Service Interface Definition

Interface	osid.OsidConstrainer
Implements	`osid.OsidRule`
Implemented By	`osid.bidding.rules.AuctionConstrainer`
	`osid.voting.rules.RaceConstrainer`
	`osid.voting.rules.BallotConstrainer`
	`osid.subscription.rules.DispatchConstrainer`
	`osid.hold.rules.IssueConstrainer`
	`osid.workflow.rules.ProcessConstrainer`
	`osid.workflow.rules.StepConstrainer`
	`osid.offering.rules.OfferingConstrainer`
	`osid.inquiry.rules.AuditConstrainer`
	`osid.provisioning.rules.BrokerConstrainer`
	`osid.provisioning.rules.QueueConstrainer`
	`osid.provisioning.rules.PoolConstrainer`
	`osid.tracking.rules.QueueConstrainer`
	`osid.resourcing.rules.JobConstrainer`
Description	An `OsidConstrainer` marks an interface as a control point to constrain another object. A constrainer may define specific methods to describe the constrainment or incorporate external logic using a rule.