$structure['title'][] = array('text' => '',
                              'style' => 'rule',
                              'width' => '100%',
                              'y_relative' => 2.5,
                              'newline' => 'y');

$style['rule']['font'] = array('family' => 'Times',     // Courier, Helvetica, Times
                               'style' => '',           // blank=Regular, B=Bold, I=Italic, U=Underline
                               'size' => 1.75,          // size in points
                               'height' => 0.75,        // line height in units
                               'draw' => 0);            // width of drawn lines

$style['rule']['fillcolour'] = array(113,113,113);   // colour for background
$style['rule']['textcolour'] = array(0,0,0);         // colour for foreground
$style['rule']['drawcolour'] = array(0,0,0);         // colour for line drawing