Scoring functions compiled with the 'mean' option are denoted as 'M' while those compiled with the 'cumulative' are denoted as 'C.' The third term defines the composition of the scoring function. This term controls the number of unique atom pairs used for compiling the scoring function. The 'complete' option will result in the scoring function compiled from all possible atom type pairs while the 'reduced' option will result in only atom pairs possible in the given complex to be used. The letter 'C' is used to denote complete scoring function while 'R' is used to denoted scoring function that is compiled with the 'reduced' option. In total of 8 scoring function families can be created with these three options.