Overrides are particularly useful for making minor changes to the way a
program functions or for selecting the data on which it operates without
having to recompile the program. Their principal value is in allowing
you to use general purpose programs in a wider variety of
circumstances. Examples of items where you can use overrides include
the following:
- Changing the name of the file to process
- Selecting the database file member to process
- Indicating whether to spool output
- Directing output to a different tape unit
- Changing printer characteristics such as lines per inch and number of
copies
- Selecting the remote location to use with an ICF file
- Changing the characteristics of a communications session
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