// identify output for 1st additional zone
$structure['multi1']['fields'][1][] = array('field' => 'quantity', 'width' => 20, 'halign' => 'center', 'y_relative' => 1);
$structure['multi1']['fields'][1][] = array('field' => 'product_name', 'width' => 30);
$structure['multi1']['fields'][1][] = array('field' => 'product_desc', 'width' => 75);
$structure['multi1']['fields'][1][] = array('field' => 'product_price', 'width' => 25, 'halign' => 'right');
$structure['multi1']['fields'][1][] = array('field' => 'extended_price', 'width' => 25, 'halign' => 'right');
$structure['multi1']['fields'][1][] = array('field' => 'vat_percent', 'width' => 15, 'halign' => 'center');

// additional line to demonstrate 'ignore_if_empty' option
$structure['multi1']['fields'][2][] = array('field' => 'image_label',
                                            'width' => '20',
                                            'style' => 'noborder',
                                            'y_relative' => 1,
                                            'ignore_if_empty' => 'y');

$structure['multi1']['fields'][2][] = array('image' => '%%image_01',
                                            'imagewidth' => 75,
                                            'imageheight' => 95,
                                            'style' => 'noborder',
                                            'ignore_if_empty' => 'y');

$structure['multi1']['fields'][2][] = array('image' => '%%image_02',
                                            'imagewidth' => 75,
                                            'imageheight' => 95,
                                            'style' => 'noborder',
                                            'ignore_if_empty' => 'y');

// third line to put a horizontal rule across the page
$structure['multi1']['fields'][3][] = array('text' => '',
                                            'width' => '100%',
                                            'style' => 'rule',
                                            'y_relative' => 1);