S. 263 : Commissioner – Revision of orders prejudicial to revenue – Book profit – Decommissioning levy, interest on decommissioning fund, interest on R & M fund and interest on R & D fund to profit as per profit and loss account – Revision was held to be not justified when in order passed by Commissioner, there was no mention as to under which category of Explanations (a) to (k) of section 115JB(2) these four items would fall- Order of Tribunal quashing the revision order was affirmed [ S. 115JB , 143(3) ]