There should be a section devoted to JCL (Job Control Language). It is arcane and difficult but is the secret sauce that makes IBM COBOL so powerful on mainframes. I looked at the courses briefly and didn't see it mentioned.
Late 70s, IBM mainframe at college, running FORTRAN, PL/1, and PL/C. The guys that knew the secret sauce hung out in the keypunch room and once in a while applied their magic. SYSIN DD *, and all that.