This schema defines structure of valid 'protocols' documents. Such documents must be used for configuring the protocol2SimTAP_intermediate.xslt XSLT transformer. An element that is being mapped to a column. This can be a parameter, a property, an appliedPhysics or appliedAlgorithm, .... Indicated by ivoId OR publisherDID of the mapped element. If we enforce use of Implies that protocol must have been registered in a SimDB Indicates details of a column