VALB gets its numbers from information on the IALA (and IAAL) screens as follows:
(A) Prior Balance = A900 + A050 (on IALA – official)
(B) Earned (Capped) = A330 (on IALA – official)
(C) Taken = A300 (on IALA – official)
(D) Earned (Unoff) = sum of A290 (on IAAL – up to the current date – for non updated lines)
(E) Taken (Unoff) = sum of A300 (on IAAL – up to the current date – for non updated lines)
(F) Current Balance = (A) + (B) + (D) – (C) – (E)
(G) Total Time = (F) – A760 (on IALA – official)
(H) Planned Leaves = sum of A300 on IAAL – after the current date
