Ledger lists every posted line: Period, Account, Source, Debit, Credit. Source links back to the form you filled, so any number traces to its typing moment.

Rule in one line: positives in Debit, negatives in Credit, each document sums to zero.

Trial Balance lists every balance for a period, debits vs credits. Both sides must match. Your accountant will ask for this. Use it when you doubt a number.

You rarely need these in the monthly routine. They prove the friendly forms are not a black box: all tiles and charts come from these lines.