Dear All,
When I create an inp file with an analytical mapped pressure load below is how it is printed. 

**LOADS
** 
** Name: Load-1 Type: Pressure Using Field: AnalyticalField-1
*Dload
model-1.9, P4, 0.0001
model-1.11, P3, 0.0001
model-1.25, P2, 0.0001
model-1.26, P4, 0.0001
model-1.27, P1, 0.0001
model-1.28, P1, 0.0001
model-1.29, P4, 0.0001
model-1.34, P1, 0.0001
model-1.35, P3, 0.0001
model-1.38, P3, 0.0001
model-1.41, P1, 0.0001
model-1.42, P3, 0.0001
model-1.43, P4, 0.0001
model-1.44, P2, 0.0001
model-1.45, P3, 0.0001
model-1.70, P3, 0.0001
model-1.71, P4, 0.0001
model-1.72, P4, 0.0001
model-1.73, P3, 0.0001
model-1.75, P2, 0.0001
model-1.76, P2, 0.0001
model-1.77, P2, 0.0001
model-1.78, P2, 0.0001
model-1.79, P2, 0.0001
model-1.83, P4, 0.0001
model-1.84, P3, 0.0001
model-1.85, P2, 0.0001
model-1.92, P4, 0.0001
model-1.93, P4, 0.0001
model-1.95, P1, 0.0001
model-1.96, P3, 0.0001
model-1.97, P3, 0.0001
model-1.98, P1, 0.0001
model-1.99, P4, 0.0001

Can someone please explain what P1, P2, P3, and P4 represent? If it has something to do with the element face - how is it applied?

Thank you!

Abaqus ​​​​​​​