IBM 1130 User Manual page 217

TESTING HINTS
1.
To test the logic in a program that uses
Commercial Subroutine Package I/O, use standard
FORTRAN READ and WRITE for 1/ O. This makes
the trace facility available. When finished, use
Commercial Subroutines READ and PRINT for
overlapped I/O.
Section Subsections
30 30
I
00
2. Ask yourself: What must be done to re-
create information if the disk cartridge is lost?
How long will it take?
Page
01
3. Keep testing in mind when planning the
development of various runs. That is, write the
file creation and maintenance programs before the
report programs that use the files.