Capillary pressure

HI, I’m using ogs5 to simulate Saltwater intrusion with RICHARDS_FLOW and MASS_TRANSPORT pcs.
I want to handle values about “CAPILLARY_PRESSURE”, but I couldn’t find the explanation about the values(attached image below).

Those anyone can help me to find the values meaning 10, 0.0001, 100?

I hope to get an answer even a single one in this question please.