My brother-in-law developed a precision system that we use unlike anything mentioned here. Every opening bid and almost every initial overcall gives points in a 3 pt range (9-11, 12-14 ...) It's VERY precise. Most of the openings and overcalls are artificial so there's no shape or suit info, but partner knows the partnership point count and can start the search for a trump fit with an appropriate level of enthusiasm. The statement above that a precision system has to have a strong 2C opening is just wrong. Most do but it's not necessary. It seems to me that precision just means that opening bids have a narrower range of possible points than the 12-21 points for one level openings in Standard American. Perhaps I'm missing something. Thanks, Steve Liebelt