'type' => 'checkbox',
},
+ {
+ 'key' => 'invoice_print_pdf-duplex',
+ 'section' => 'invoicing',
+ 'description' => 'Insert blank pages so that spooled invoices are each an even number of pages. Use this for double-sided printing.',
+ 'type' => 'checkbox',
+ },
+
{
'key' => 'invoice_default_terms',
'section' => 'invoicing',