
Most reports have a selection criteria form, where the amount of
data can be carefully selected each time that a report is requested. As the parameters are
entered, the number of records selected is displayed; if it goes down to zero, the 'print'
and 'preview' buttons will be greyed out.
An example is shown on the left (click to
enlarge)
In the example, because a particular VAT quarter has been selected, Financial
Year is no longer appropriate as a criterion, so is greyed out.