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(focus <symbol>+)

(focus <symbol>+)

Changes the focus module. The next time the engine runs, the first rule to fire will be from the first module named as an argument (if any rules are activated in this module). The previously active module is pushed down on the focus stack. If more than one module is listed, they are pushed onto the focus stack in order from right to left. If the engine is running at the time of the call, the focus changes immediately and the next rule to fire will be from the first named module.


  

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