$ tput cup 2 2 | hd
   00000000  1b 5b 33 3b 33 48                                 |.[3;3H|
   00000006
   $ tput cup 4 5 | hd
   00000000  1b 5b 35 3b 36 48                                 |.[5;6H|
   00000006
   printf("\x1b\x5b%d;%dH", y, x);