These positions name the fields of an input record that are used in an RPG IV program. This name must follow the rules for .
To refer to an entire array on the input specifications, enter the array name in positions 49 through 62. If an array name is entered in positions 49 through 62, control level (positions 63-64), matching fields (positions 65 and 66), and field indicators (positions 67 through 68) must be blank.
To refer to an element of an array, specify the array name, followed by an index enclosed within parentheses. The index is either a numeric field with zero decimal positions or the actual number of the array element to be used. The value of the index can vary from 1 to n, where n is the number of elements within the array.