initial state

A pseudostate that indicates the default starting state of the enclosing region. It is used when a transition targets the boundary of a composite state.

See also composite state, creation, entry activity, entry point, exit point, initialization, junction.

Semantics

To promote encapsulation, it is desirable to separate the outside view of a composite state from the inside details as much as possible. From the outside, the state is viewed as an opaque entity with hidden internal structure. From the outside viewpoint, transitions go to and from the state itself. From the inside viewpoint, they connect to substates within the state.

An initial state is a dummy state (pseudostate) that designates the default starting state of the containing ...

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