the process-data diagram that is depicted at the right, gives an overview of all of these activities/processes and deliverables. the four gray boxes depict the four main implementation phases, which each contain several processes that are in this case all sequential. the boxes at the right show all the deliverables/concepts that result from the processes. boxes without a shadow have no further sub-concepts. boxes with a black shadow depict complex closed concepts, so concepts that have sub-concepts, which however will not be described in any more detail. boxes with a white shadow (a box behind it) depict open closed concepts, where the sub-concepts are expanded in greater detail. the lines with diamonds show a has-a relationship between concepts.