UMLR — No way of specifying element documentation

There is no equivalent in UML 2.x of the 'documentation' tag at UML 1.x: a standard way of distinguishing the description of an element.
Comment is generic and has no property to distinguish the 'inherent' description of an element from annotations on specific diagrams, and there is no standard stereotype which could be applied (though use of a stereotype is arguably heavyweight for what is a fairly pervasive requirement).