34.14It sometimes proves necessary to vary the terms of an Estimate. It would be wrong to present provision for a substantially incorrect Estimate and in certain circumstances a Revised Estimate may be presented, for example to correct an ambit or re-allocate expenditure against subheads. A Revised Estimate cannot be used to seek an increase or decrease in budgets or cash: these should be sought through presentation of a Supplementary Estimate. A Revised Estimate will look like the Main Estimate that it replaces. This can only be done before the original Estimate has been voted. Any increase in a Main Estimate is sought by means of a Supplementary Estimate.