Use of information is measured and how current and relevant it is gets evaluated, so that it is updated or, when obsolete, retired: controls for retiring knowledge are defined and applied; knowledge elements are assessed for how useful, relevant and valuable they are; information that is outdated but still worth keeping is updated; and related information that the enterprise no longer needs is identified and retired.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.