Version 6.3.13 for Windows
 —  Parameter Reference  —

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.

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