Rhapsody has always had the ability to populate an existing diagram by right-clicking the diagram and choosing 'Populate' - but that was always manual - you had to select the elements you wanted Rhapsody to drop onto the diagram.
What we really wanted was the ability to select an existing element on a diagram and say 'add anything thats connected to this onto the diagram'. Well in Rhapsody 9.0.1 you can do just that. You can right click an element on a diagram and invoke populate:
And then simply select relations from/to selected (which is the default)
Combine that with the automatic layout tools and you can quickly get a diagram populated: