S. 254(2) : Appellate Tribunal-Rectification of mistake apparent from the record-Power to recall and to pass any order-Authority letter-Authority to counsel to appear and present before Tribunal-Authority is fullest, unlimited and unrestricted and there is no rider mentioned therein, withdrawal/non-pressing of ground by counsel-Tribunal had accepted withdrawal/non-pressing without authority of counsel is devoid of any merit and is rejected. [S. 254(1)]