Dynamic highlighting of related artifacts in a UML diagram

A method displays a Unified Modeling Language (UML) diagram on a graphic user interface. The UML diagram can have, for example, nodes representing objects of an object-oriented system. Further, input is received regarding the location of a user-directed pointer on the UML diagram. The location of the pointer identifies a currently "selected node" of the UML diagram. In response to such input, the method dynamically highlights portions of the UML diagram depending on the location of the selected node. This highlighting process dynamically alters the appearances of nodes logically related to the selected node by highlighting nodes that are relatively closely related to the selected node differently (e.g., more brightly) than nodes that are not as relatively closely related to the selected node.