In the first example, the input file is called GTBMNAM, it is fixed-length format, has a record length of 2000, and has a block size of 2000. Each time GeoTAX is ready to read a record from GTBMNAM, it instead calls the exit routine EXITPGM. When EXITPGM is finished and normal processing resumes, GeoTAX skips the first 5000 records in the input file, cross-sectionally samples 250,000 records, but processes no more than 200,000 records total.
In the second example, GTBMCOK is the output file and has a fixed-length format, a record length of 397, and a block size of 397.
In the third example, GTBMARC as an additional output file with a fixed-length format, a record length of 256, and a block size of 256. The C in position 37 of this parameter indicates a character-format delimiter in file GTBMARC with the double-quote character (") delimiter specified in position 39. Thus, when GeoTAX writes output record fields to GTBMARC, they ware delimited by double-quotes.
*........1.........2.........3.........4.........5.........6.........7.........8*
2345678901234567890123456789012345678901234567890123456789012345678901234567890
FILEDF GTBMNAM F 2000 02000 EXITPGM 0005000 2500000
0200000FILEDF GTBMCOK F 0397 00397FILEDF GTBMARC F 0256 00256 C "