Look & #160; for & #160; a & #160; matching & #160; value & #160; in & #160; the & #160; first & #160; row & #160; of & #160; the & #160; given & #160; table, & #160; and & #160; return & #160; the & #160; value & #160; of & #160; the indicated & #160; row.
Procurar un valor correspondente na primera fila da táboa dada e logo devolver o valor da fila indicada.