
    gff2sga.pl [options] <GFF file>

        where options are:
        -h|--help                Show this stuff
        --db <path>              Use <path> to locate Chrom Id Storable File 'chro_idx.nstorage'
        -f|--feature <feature>   Set Feature name <feature>
        -s|--species <species>   Assembly <species> (i.e hg18)
        -c                       Generate a Centered SGA file
        -u                       Generate an Unoriented SGA file
        -x                       Generate an extended SGA file with the
        6th field equal to the GFF 'feature' field,
            and the feature field equal to the GFF 'source'

