bwa_aln                 R wrapper to run BWA alignment tool
                        BWA-backtrack
bwa_build_index         R wrapper to create BWA index files
bwa_mem                 R wrapper to run BWA alignment tool BWA-MEM
bwa_sam                 R wrapper to convert bwa aln output to SAM
                        format
xa2multi                Unpack multiple alignments stored in BWA output
