This event handler is associated with a master/detail report. The report contains a subreport that prints the detail. This report resides on a form with a button captioned 'Hide Detail'. When the button is clicked, the event handler toggles the value of the subreport's visible property and then prints the report. As a result, the report is either a high-level summary or a full-detail listing; thus, the report provides the functionality of two reports from only one layout.