S. 147 : Reassessment-With in four years-Cash credits-Shell companies-Information from Investigation Wing-Recorded reason mechanical manner without application of mind by the Assessing Officer-Mistake-A mistake, which can be corrected under section 292B, should be such that if excised it does not change tenor and scope of documents/proceedings referred to therein-Order of Tribunal quashing the reassessment order is affirmed by the High Court as no substantial question of law-SLP of Revenue is dismissed as the delay of 213 days is not satisfactorily explained. [S. 68, 143(1), 148, 260A, 292B, Art. 136]