If condition script

@IDescendants("Total

Following is the script of an IF CONDITION. It gets validated. I want to know the significance of red colored script, because to me, I don't get any logical grounds for it. But when I try to validate the BR without that red script, it gives me error.

FIX (@IDescendants("Total Capex"),"working","local",{Entity},"no department",{New_loans},@descendants("capex line items"),{new_loans},{Venture},@IDescendants("Yeartotal") ,  &Curryr,  "Budget")

     "Acc. finance funded cost"(

      IF ("No Account"->"No Period"->"No Headcount"->"Year of loan schedule"== 1 AND "No Account"->"No Period"->"No Headcount"->"Drawn Month"== 3)