+ 'key' => 'invoice_html',
+ 'section' => 'billing',
+ 'description' => 'Optional HTML template for invoices. See the <a href="../docs/billing.html">billing documentation</a> for details.',
+
+ 'type' => 'textarea',
+ },
+
+ {
+ 'key' => 'invoice_htmlnotes',
+ 'section' => 'billing',
+ 'description' => 'Notes section for HTML invoices. Defaults to the same data in invoice_latexnotes if not specified.',
+ 'type' => 'textarea',
+ },
+
+ {
+ 'key' => 'invoice_htmlfooter',
+ 'section' => 'billing',
+ 'description' => 'Footer for HTML invoices. Defaults to the same data in invoice_latexfooter if not specified.',
+ 'type' => 'textarea',
+ },
+
+ {
+ 'key' => 'invoice_htmlreturnaddress',
+ 'section' => 'billing',
+ 'description' => 'Return address for HTML invoices. Defaults to the same data in invoice_latexreturnaddress if not specified.',
+ 'type' => 'textarea',
+ },
+
+ {