My partner is from Europe and said he played a system that opened 5 card majors and weak NT (12-15 hcp). I had played some ACOL as well as American Standard. We combined our methods and now open: 5+ card D, H and S (12-15 hcp), weak NT (12-15 hcp), weak 2's with strong 2C (22+ points). All hands with 16 - 21 points are opened with 1C before bidding NT or 5 card suit. Is this part of a recognized bidding system. If so, where can we find more information on the system?