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User functions provide the means of implementing additional user processing within an existing function or as an independent implementation used in conjunction with an existing function. There are four basic user functions: Execute External Function, Execute Internal Function, Execute User Program, and Execute User Source.
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Function |
Action Diagram |
Implementation |
|---|---|---|
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EXCEXTFUN |
Yes |
External |
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EXCINTFUN |
Yes |
Internal |
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EXCUSRPGM |
No |
External |
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EXCUSRSRC |
No |
Internal |
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