1. A computer controlled method comprising: presenting a workspace window responsive to a relationship data structure, said relationship data structure having a set of nodes and a set of edges representing relationships between each node of the set of nodes, the workspace window displaying an ordered set of text strings with separately movable subparts, said separately movable subparts including a plurality of instance-representations having user assigned degree of importance values, and each instance-representation of the plurality of instance-representations being associated with a node of the set of nodes in said relationship data structure; presenting a first instance-representation of the plurality of instance-representations as a first separately-movable instance object and a second instance-representation of the plurality of instance-representations as a second separately-movable instance object located in the workspace window; dragging said first instance-representation; detecting when said first instance-representation is dropped within a threshold distance of said second instance-representation; identifying, responsive to the detecting, one of a plurality of spatial relationships between said first instance-representation and said second instance-representation; selecting an operation responsive to said one of said plurality of spatial relationships; modifying, responsive to the selected operation, a composite object in said workspace window, said composite object incorporating an entity/relationship object represented by said first separately-movable instance object and an entity/relationship object represented by said second separately-movable instance object; presenting, in said workspace window, an other instance-representation that represents said composite object as modified; and modifying, responsive to the selected operation, an edge of the set of edges in the relationship data structure indicating a strength of a relationship between a first node corresponding to the first instance-representation and a second node corresponding to the second instance-representation.