The length of the special case table is stored in the 257th element of the array and can be from 0 to 64 elements. The length must be stated, even if it is zero. Thus, the smallest the array specified in the LEXICAL ORDER IS statement can be is 257 elements.
The special case table starts with the 258th element of the array, which is the element immediately following the length. An index of 0 specifies the 258th element of the array.
Note: In the example, the BASE of the array was 0, and so the 258th element of the array is A(257). Thus, index 0 in the special case table is A(257). If the BASE of the array had been another value, the element number for the start of the special case table would have been different, but still at the 258th element.
