# Documentation

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## Transition Connections

### Transitions to and from Exclusive (OR) States

This example shows simple transitions to and from exclusive (OR) states.

The following transition...Is valid when...
`B` to `A`State `B` is active and the event `E1` occurs.
`A1` to `A2`State `A1` is active and event `E2` occurs.

See Transition to and from Exclusive (OR) States for more information on the semantics of this notation.

### Transitions to and from Junctions

The following chart shows transitions to and from connective junctions.

The chart uses temporal logic to determine when the input `u` equals 1.

If the input equals 1...A transition occurs from...
Before t = 2`Start` to `Fast`
Between t = 2 and t = 5`Start` to `Good`
After t = 5`Start` to `Slow`

For more information about temporal logic, see Control Chart Execution Using Temporal Logic. For more information on the semantics of this notation, see Transition from a Common Source to Multiple Destinations.

### Transitions to and from Exclusive (OR) Superstates

This example shows transitions to and from an exclusive (OR) superstate and the use of a default transition.

The chart has two states at the highest level in the hierarchy, `Power_off` and `Power_on`. By default, `Power_off` is active. The event `Switch` toggles the system between the `Power_off` and `Power_on` states. `Power_on` has three substates: `First`, `Second`, and `Third`. By default, when `Power_on` becomes active, `First` also becomes active. When `Shift` equals 1, the system transitions from `First` to `Second`, `Second` to `Third`, `Third` to `First`, for each occurrence of the event `Switch`, and then the pattern repeats.

For more information on the semantics of this notation, see Control Chart Execution Using Default Transitions.

### Transitions to and from Substates

The following example shows transitions to and from exclusive (OR) substates.

For details on how this chart works, see Key Behaviors of Debouncer Chart. For information on the semantics of this notation, see Transition from a Substate to a Substate with Events.