<?php
$meta['_meta_keywords'] = 'comma, separated, keywords';
$meta['_meta_description'] = 'Short description of page';
jack_page_meta($meta);

<?php
add_title("Titel");

	<meta property="og:locale" content="nl_NL" />
	<meta property="og:type" content="website" />
	<meta property="og:title" content="Lorem ipsum dolor sit amet" />
	<meta property="og:description" content="Lorem ipsum dolor sit amet" />
	<meta property="og:url" content="http://domein.nl/" />
	<meta property="og:site_name" content="Naam" />
	<meta name="twitter:card" content="summary" />
	<meta name="twitter:description" content="Lorem ipsum dolor sit amet, consectetur adipisicing elit. Est quibusdam tempore in, beatae, omnis saepe velit veniam aliquam perspiciatis enim, eos esse quasi nobis id atque quisquam sequi pariatur sapiente." />