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Preconditions can be configured in several ways:
A result of a precondition can be negated
A result of a precondition can be combined with a result of previous preconditions using the following ways:
Discard the result of the previous precondition (Results of the previous preconditions are not taken into account)
AND (All of the preconditions have to be true to allow execute a post function)
OR (Only one of the preconditions has to be true to allow execute a post function)
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