1. A method, comprising: displaying, in a first window, a first portion of a plurality of nodes, each of the plurality of nodes representing a component modeled by a service model; determining that a cursor is positioned substantially coincident with a first target area associated with a first node of the first portion of the plurality of nodes; displaying, in a second window, the first node and a second portion of the plurality of nodes coupled to the first node, at least some of the second portion of the plurality of nodes invisible in the first window, responsive to the act of determining that a cursor is positioned substantially coincident with a first target area associated with a first node of the first portion of the plurality of nodes; and ceasing display of the second window upon determining that the cursor is positioned outside of the second window.