The dispo module (described in Section 3.11) is able to display the source index space and the dependences therein in up to three dimensions. In the current implementation all statements must be in the same index space; this excludes imperfectly nested loops. The filter module provides a graphical interface to enable the user to select a subset of statements which satisfy these restrictions. The set of dependences which stem from the selected statements can again be reduced by mouse selection. The user may save the selected set of dependences for display with Dispo or cancel the process. In the future this module might be incorporated into Dispo.