The IBM-supplied example edit program in Assembler, named DSQUXCTP, is located in QMF sample library QMF810.SDSQSAPE. The example program is heavily commented; you can print it, browse it online, or modify it to meet your needs. A PL/I data structure is shipped with QMF as DXEECSP, located in library QMF810.SDSQUSRE. Include this structure in your program.