IBM 5280 Programmer's Manual page 177

Execution- Time Considerations
The amount of 5280 storage must be sufficient to accommodate the load
modules to be executed. The load module created is a complete 5280
partition, and its size is printed by the compiler.
The input/output device requirements for execution of the problem program
are determined from specifications made in the source program. See Chapter
8 for more information on 5280 storage requirements.
F- 2 IBM 5280 COBOL Programmer's Guide