“(1) The section gives the court a wide discretion to review vary or rescind any order made in the exercise of the bankruptcy jurisdiction. (2) The onus is on the applicant to demonstrate the existence of circumstances which justify exercise of discretion in his favour. (3) Those circumstances must be exceptional. (4) The circumstances relied on must involve a material difference to what was before the court which made the original order. In other words there must be something new to justify the overturning of the original order. (5) There is no limit to the factors which may be taken into account. They can include, for example, changes which have occurred since the making of the original order and significant facts which, although in existence at the time of the original order, were not brought to the court’s attention at that time. (6) Where the new circumstances relied on consist of or include new evidence which could have been made available at the original hearing, that, and any explanation the applicant gives for the failure to produce it then or any lack of such explanation, are factors which can be taken into account in the exercise of the discretion.”