In these series of videos Brent Weaver the lead engineer who developed the AT Pro explains and demonstrates the AT Pro's professional mode and how to never dig a bottle cap again!!!! (1st video about 10:05 onwards) Woot!!!! Hope this helps.
Cheers! http://www.findmall.com/read.php?27,1309852,1315926#msg-1315926
Cheers! http://www.findmall.com/read.php?27,1309852,1315926#msg-1315926