InvoiceView definitions for ProfitLoss, TotalCost

In the technical details in the part advisor, under the “Profitable?” tab, I see that the fields ProfitLoss and TotalCost are from “InvoiceView”. Is there a place I can reference to get the formulas for the fields? I want to do some profit loss reporting but I don’t seem to have access to an object called InvoiceView in BAQ.