A link is a directional relationship between two events, represented by a colored arrow. The first event is the master event, the second is the slave event.

Depending on the programed behavior for the link, and it’s elasticity, any movements of the master event may lead to a movement of the slave event, alternatively it may trigger a warning on the incoherency of the movement.

Movements involving the slave event may be prevented, or a warning may be triggered for the incoherency of the movement.

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