S. 245D: Settlement Commission-Settlement of cases-True and full disclosure-High Court set aside order of Single Judge interfering with Settlement Commission order-Once ITSC was satisfied about true and full disclosure and had proceeded beyond stage of s. 245D(2C), writ court cannot re-appreciate sufficiency of material or interpretation of seized documents-Alleged calculation error could be brought before appropriate authority for correction. [S. 245C, 245D(2C), 245D(4), Art. 226]