parid2293 | Mon, 24 Feb 2003 12:55:12
As in "R-node": role. The subject of every r-node is a role that can be played in one or more assertions.
Used in "'R' endpoint," "CR arc," "RC arc" as a synonym for r-node. See, r-node.
Neeless repetition of the r-node definition and only part of that.