Description A Pool represents a participant in a collaboration. The participant can be a specific partner entity, for example, a company, or it can be a more general partner role, such as a buyer, seller, or manufacturer. Graphically, a Pool is a container to partition a process from the other pools. A Pool can contain a process, or it can be a black box. A Pool with suppressed content will display a multi-instance marker if the participant referenced by the pool has a minimum multiplicity value of two or more. A Lane is a sub-partition within a pool. Lanes are used to organize and categorize activities within a pool according to function or role. They are as follows: - internal roles, for example, Manager and Associate
- systems, for example, an enterprise application
- internal departments, for example, shipping or finance
In addition, Lanes can be nested in a pool. For example, there could be an outer set of Lanes for company departments and an inner set of Lanes for the roles within each department. Notation - Pool that contains a process or black box
 - Pool with suppressed content
 - A Pool with Suppressed Contents Referencing a Multi-instance Participant
Example 
Pool with nested Lanes
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