The document discusses how returns, carriage inwards, and carriage outwards are treated in a company's income statement and statement of financial position. Returns inwards are deducted from sales, while returns outwards are deducted from purchases. Carriage inwards, the cost of transporting purchased goods, is added to the cost of purchases. Carriage outwards, the cost of transporting goods sent to customers, is entered in the profit and loss account section of the income statement and excluded from the calculation of gross profit.