Clicking on the title of each column in the main index provides some rudimentary way of sorting a database. A much powerful method is to open the sort dialog (in Edit->Sort). This menu, displayed in Figure 1-4, gives a list of fields which can be used as sort criterions, plus a flag indicating how they are currently used. By clicking on the left column, it is possible to choose how the field will be used:
Nothing means the field is not in use.
A > symbol means sort in ascending order.
A < symbol means sort in descending order.
By clicking on the Reorder button, it is possible to group the activated fields on the top of the list, for a more convenient access.
The order in which the sorting is performed depends on the order in the list. To modify this order, simply drag and drop an item to change its position.