IF Else statement in BEX

Dear BW Eperts,

I am working on one of the Support issue below logic is applied at query level  i am not sure about how it will work can any one explain the logic that would help me a lot.

(NODIM (A) == 0) * (NODIM (B) == 0) * (NODIM (C) ==0) * (NODIM (D) == 0) * (NODIM (E) ==0) * 8 + (NODIM (E) <> 0) * (NODIM (E))

Here all A,B,C,D,E are restricted key figures

Thanks

Theertha