Swimlane for Order Fulfilment

This is a UML activity diagram example for order fulfillment.

A swimlane activity diagram groups the activities into swimlanes columns that contain all of the activities which fit into the category represented by that swimlane.  Swimlanes can represent many categories of information such as actors which perform the activities (i.e., role or department), the stage of the process in which the activity takes place, or whatever else the creator of the document feels should be emphasized and communicated by the swimlane diagram.  The term swimlane was adopted due to the visual similarity between the horizontal rows of the diagram to that of the swimlanes found within a swiming pool.