Pedigree file that contains genotype data for 3 SNPs and 4 individuals (2 controls and 2 cases). The first column is for pedigree IDs, the second for individual IDs, the third for paternal ID, the forth for maternal ID, the fifth for sex code, and the sixth for disease designation or quantitative phenotype value. Column 7 starts the genotype data for the markers, with each allele of each genotype in its own column (e.g. for 3 markers there will be 6 allele columns). The header row is for display purposes only and should not appear in the actual file.