Six bytes no jump reaches: LD A,D, then LD (PLACE_NUDGE),A, then JR back to the step in BUILD_ROOM after template 31 that counts the byte after the header and goes on to the next group. That is a header like template 31's which set PLACE_NUDGE from the byte after it, for the objects that follow. Nothing jumps here, so the nudge is always 0; the bytes are kept as data because their second instruction runs across SET_PLACE_NUDGE_END.