Extending a signal forward into future bars is useful when there are multiple sets of conditions that happen at different times. IE. A crossover happens first. The pullback happens several bars later, and a support line bounce several bars after that. The crossover condition needs to be extended forward enough bars to allow for the pullback to occur. Then those two conditions need to be extend further to allow the support line bounce to occur. The Signal Extender is a way to link them together in a manner of speaking.