1130 Commercial Subroutine Package - All about the IBM 1130 ...

Errors: If a character does not appear in ICHAR, and does appear in JCARD, it will becoded as a blank.Remarks: It is the user's responsibility to create the ICHAR array. It must alwayscontain 40 characters. The arrangement shown in the example is, in general, the best,since the characters appear in the order of their most frequent occurrence, and thisarrangement includes those characters (A-Z, 0-9, blank, comma, period, and ampersand)commonly found in alphabetic files (names and addresses, etc.). The user may, however,place any 40 characters in the ICHAR array, in any order.If the field to be compressed consists primarily of numbers, for example, they should beplaced first in the ICHAR array.Note that the A3 format discussed here is a special one and is not the same as theFORTRAN A3 format.