Printing
To print a form instance, it has to be modeled with the Printable property enabled. This displays the "Print" button when a form instance is shown, along with the buttons for other operations.
Pressing the "Print" button gives access to print the form in the browser.
It is recommended to select Horizontal Layout and Scale to 80%.
To extend the default behavior of printing, the modifyPrint() function should be defined in the advanced editing of the form.
