S. 264: Commissioner-Revision of other orders-Exemption under section 11 denied due to inadvertent and bona fide punching errors in the return processed under section 143(1)-Assessee has the discretion to seek revision instead of appeal-Commissioner obliged to consider and grant relief even for an error committed by the assessee itself. [S. 11, 143(1), 154, 246A, Art. 226]