Personally, in this particular topic I think the answer would be "What do you WANT it to mean?"
His first AI patcher patched the ai general.txt and the ai ship design text file from the standard movement system to his Quasi Newtonian Physics movement system for P&N 2.x (ie a dreadnaught with only 2 engines isn't going
anywhere). (I think it might have tweaked it in a few other ways, but I'm not a computer expert so I'll let him get into the specifics
)