Template:Certification Table Entry/Sales/PortugesePeriod/doc
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This helper template calculates periods for Portuguese certifications.
It returns:
| Before May 2005 | Before 7 July 2011 | Before 2016 | From 2016 |
|---|---|---|---|
| 1 | 2 | 3 | 4 |
Returns 0 if the data provided is insufficient