below expectations, page-17

It would be interesting to know how these programs "think", that is the patten/formula/logic that allows these programs to be so effictive. If a largish order is put in how is the program set up to respond to keep the sp heading in the preferred direction. Personally I don't see how orders of five or ten shares can make that much difference to a sp, but I suppose it's relentless. I would have thought it would be better to dump a bucket load in one hit, trigger some stops & create some & panic, anyway it seems to have the desired effect.