MSG-PAGED-PREV
This event is fired when the user presses the "Previous Record" button in a paged grid. The expected response from the runtime is to supply the record before the first record of the grid's current data. To do this, add a new record at the start of the grid (using Record-To-Add and Insertion-Index). If the data is from an indexed file, the value of EVENT-DATA-2 is the number of READ PREVIOUS statements you need to perform to get to the appropriate record. This value is controlled by the File-Pos property. If you cannot supply the next record (i.e. because you have reached the end of the file), respond by setting EVENT-ACTION to EVENT-ACTION-FAIL.