the second task took a little over 4500 seconds... But it was worth the wait...this task would have driven me nuts without your help.. I genuinely appreciate it.. However, I would also like to add that, with the "sentences" macro, I also received several false positives....is this because the script also calculates familiarity between sentences such that sentences beyond a given threshold are automatically flagged as duplicates, even without word-for-word duplication...? That would be interesting to know...