[Tutor] What is a "state variable"?

[Richard D. Moores]

The term comes up in the 2nd section of
<http://personalpages.tds.net/~kent37/stories/00014.html>

<http://en.wikipedia.org/wiki/State_%28computer_science%29> didn't help.

k = 23

Is k then a state variable in that its state is 23? What sorts of
variables are, and are not, state variables?

The concept of a state variable seems central to Kent's article. If
only I knew exactly what it was.

Thanks,

Dick Moores