Before revision:  The range of this memory is defined herein by dependence between three successive jumps of the process. This dependence is motivated both empirically, by analysis of empirical two-point histograms , and theoretically, by analysis of the bid-ask bounce mechanism containing some delay  .
After revision:  The dependence was found by analysis of empirical two-point histograms , and theoretically, by analysis of the bid-ask bounce mechanism containing some delay .