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State Diagrams 5, State numbers
In figure 5 I have added a number to the state circle.
This is the state number. Every state must have a unique number.
Not everyone uses numbers to identify states. Many people prefer to
use names, and would consider me a barbarian for using numbers. I prefer
numbers because it is less taxing of my imagination to keep on coming
up with unique and descriptive names. Besides, in some of the languages
a state machine might get encoded in it is easier to code if the states have numbers.
Likewise, not everyone uses circles to symbolize states. A common variant
is a rectangle with rounded corners. That certainly gives you more space
for words inside. I use circles because that's how I first learned to do it,
and for no other rational reason.
Whatever your preferences are, it shouldn't really matter. What matters
is that you know what you mean and are able to convey that meaning to
your colleagues.
