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The beginning is shown by the initial state. It is a pseudostate
(i.e., its only purpose is to control the state machine) and it does not describe a
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real state of the context object. The transition that originates from the initial state
points to the ??? real ??? initial state. This transition is mandatory, and there can always
be one only. No event or condition is permitted at this transition. However, the
transition may define a behavior.
In contrast to the initial state, a fi nal state is a real state (i.e., the context object
can be present in this state). There are value combinations that describe the fi nal
state. In contrast to the ??? normal ??? states, a fi nal state does not have any outgoing
transitions of course, and it has no internal behavior and cannot be described in
more detail by decomposition. If no other regions of the enclosing state machine
are active, then the fi nal state completes the state machine.
An initial state or a fi nal state is denoted similar to an initial or fi nal node of an
activity ( Figure 3.


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