transition

A relationship within a state machine between two states indicating that an object in the first state, when a specified event occurs and specified guard conditions are satisfied, will perform specified effects (action or activity) and enter the second state. On such a change of state, the transition is said to fire. A simple transition has a single source state and a single target state. A complex transition has more than one source state and/or more than one target state. It represents a change in the number of concurrently active states, or a fork or join of control. An internal transition has a source state but no target state. It represents a response to an event without a change of state. States and transitions are the vertices ...

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