EXAMPLE  O Sort fields:    String calc: /01/ -> Auto-incrementing: Numeric calc: + * .15 = Y/N test: Key field for list derived text: Note that reference file needs no index but must be sorted. Derived text: The following is an example of derived text where the reference file is not kept in memory. Note that an index file is necessary and that the index field size (2) must agree exactly with its size in the refernce file. Key field for list derived text: Derived text: 0Cdddddddddddddd00 Cdddddddddddddd01CT0990112"797079 ýÿ/01/ý;ª0ýþ1"4 $'9,999.99" 999.99, *<  $'99,999.99ýûþ.15,  Ò!aYNREF LST 5Ò!CMEMREF LST <  "#R !99EXTREF ":