Field boundaries

Assembler language statements normally occupy one 80-character record, or line. For information about statements that occupy more than 80 characters, see Continuation lines. Each line is divided into three main fields:
  • Statement field
  • Continuation-indicator field
  • Identification-sequence field

If it can be printed, any character coded into any column of a line, or otherwise entered as a position in a source statement, is reproduced in the listing printed by the assembler. Whether it can be printed or not depends on the printer.

Uppercase Printing: Use the FOLD assembler option to instruct the assembler to convert lowercase alphabetic characters to uppercase alphabetic characters before they are printed.