S. 245D : Settlement Commission-Settlement of cases-Procedure-Application-Settlement Commission empowered to examine and adjudicate all aspects arising from application and accord full and complete closure to all disputes-Entitled to exercise all powers that are otherwise vested in Income-Tax Authority-Explaining transaction and surrendering disputed receipt-Cannot be treated as non-disclosure in application-Voluntary surrender accepted-Procedure adopted by Settlement Commission neither incorrect nor erroneous. [S. 245C, 245D(4), 245E, 245F, 245I, Art. 226]