1. A computer controlled method comprising: presenting a workspace window responsive to a relationship data structure that represents a comprehension state; presenting a presentation set of an ordered set of text strings from an electronic document, said presentation set including one or more identified strings; receiving a quick-click command invocation on said one or more identified strings by said workspace window; and modifying said relationship data structure by adding an entity/relationship object to said relationship data structure responsive to said quick-click command invocation and said one or more identified strings.