The document describes how to recreate a debtors control ledger for a small business for the month of January 2015. It provides the opening balance of debtors as $3,000 on January 1st. It then lists expected credit sales, discounts given, bad debts, and sales returns for the month. It calculates the estimated collections from debtors as $18,000 by taking the total sales and payments and subtracting discounts, bad debts, returns, and the closing balance. Recreating the debtors control ledger involves tracking additions like sales and payments in, and subtractions like discounts, debts, and returns out to calculate the estimated collections amount.