CHR                     A dictionary to map chromosome names to
                        integers.
DBT                     A decoding byte table to map raw intergers to
                        genotype dosages.
readBED                 Read BED file
readBIM                 Read BIM file
readBSM                 Read Binary Symmetric Matrix (BSM)
readFAM                 Read FAM file
readGRM                 Read Genetic Related Matrix (GRM) of GCTA
readIBS                 Read PLINK Binary IBS matrix
readIID                 read individual ID
readREL                 Read PLINK Binary REL matrix
readVCM                 Read Variant Count Matrix (VCM) accompanying a
                        GCTA GRM
readVID                 read variant ID
saveBED                 Save BED file
saveBSM                 Save Symmetric Matrix to Binary
saveGRM                 Save symmetic matrix to GCTA GRM format.
scanBED                 travers variants in a PLINK1 BED fileset
testReadBED             Test BED Reader
testReadBSM             Test Genetic Relatedness Matrix Reader
