table bigChain
"bigChain pairwise alignment"
    (
    string chrom;       "Reference sequence chromosome or scaffold"
    uint   chromStart;  "Start position in chromosome"
    uint   chromEnd;    "End position in chromosome"
    string name;        "Name or ID of item, ideally both human readable and unique"
    uint score;         "Score (0-1000)"
    char[1] strand;     "+ or - for strand"
    uint tSize;         "size of target sequence"
    string qName;       "name of query sequence"
    uint qSize;         "size of query sequence"
    uint qStart;        "start of alignment on query sequence"
    uint qEnd;          "end of alignment on query sequence"
    double chainScore;    "score from chain"
    )