What three main tasks comprised the 'trinity' used to test the breed's comprehensive utility in early field trials?

Answer

Land pointing, water retrieving, and tracking

The historical emphasis of early developers was on the trinity of land pointing, water retrieving, and tracking, often tested in severe weather.

What three main tasks comprised the 'trinity' used to test the breed's comprehensive utility in early field trials?
HistoryDogbreedingGerman Wirehaired Pointer