Used by the routines at 59148 and 62368. T values in this block may be (and in practice are) used by play area tiles at y-coordinates 4, 10, 16, 22, 28, 34 and 40. The T values at addresses 46266, 46267, 46275-46281, 46309-46312 and 46326-46331 are used only by tiles at y-coordinate 40 (which are never displayed), and are therefore effectively unused.