1. A method for graphically representing an input query, the method comprising: receiving, in an electronic discovery computing system and from a user interface, an input query that includes a Boolean expression for identifying documents in a document repository of the electronic discovery computing system; parsing the input query with the electronic discovery computing system to identify terms and operators included in the input query; generating, using the electronic discovery computing system, a graphical representation of the input query that shows how the terms and operators are interpreted by the electronic discovery computing system; and causing the graphical representation to be displayed via the user interface.