WFOPFA - Opening of Work Files

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# WFOPFA - Opening of Work Files

This Natural profile parameter specifies when work files are to be opened by Natural.

Possible settings | `ON` | A work file is opened at the time when it is first accessed by a given `READ WORK FILE` or `WRITE WORK FILE` statement. This means that only those work files which are actually accessed are opened, while the contents of unopened work files are not deleted.
`OFF` | All work files referenced in a Natural object are opened when the execution of this object starts. (This may delete the content of a work file when closing if the work file was referenced by a `WRITE WORK FILE` statement that was never executed.)
Default setting | `ON` |
Dynamic specification | yes |
Specification within session | no |

Note
`WFOPFA=OFF` only affects main programs; for routines, `WFOPFA=ON` always applies.