The 2d Graph panel (panels/2d/graph) is a powerful tool for understanding and navigating the graph structure in smaller GroIMP models.
The menu of this graph allows to change the (layouts (Layout > Edit), to change between different Graph descriptors (Graph > Edit), to redraw the graph / reapply the layout (View > Redraw), collapse and expand all node (View > Collapse all, View > Expand all) and to save the currently displayed picture (View > Snapshot)
Starting with GroIMP 2.2.2 it is possible to enable auto redrawing of the 2D Graph in the preferences. This will automatically redraw after every graph changing event.