static function getDefaults()
{
return apply_filters('pressbooks_theme_options_mpdf_defaults', array('mpdf_page_size' => 'Letter', 'mpdf_include_cover' => 1, 'mpdf_indent_paragraphs' => 0, 'mpdf_include_toc' => 1, 'mpdf_mirror_margins' => 1, 'mpdf_margin_left' => 15, 'mpdf_margin_right' => 30, 'mpdf_hyphens' => 0));
}