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format. A test condition (or conditions) can be set up in an event in a
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script and when the condition evaluates to true, the specified
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action[s] is/are taken. An event can be <em>persistent</em>,
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condition, an item may be set to another value. This value may
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be a value, or a delta value, and the change from the
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approach is specified via the time constant. Here is an example
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illustrating the format of the script file: