{source}
<!– You can place html anywhere within the source tags –>
<iframe width=100% height=»720″ src=»https://www.youtube.com/embed/N9tryKZkwS0» frameborder=»0″ allow=»autoplay; encrypted-media» allowfullscreen></iframe>

<script language=»javascript» type=»text/javascript»>
// You can place JavaScript like this

</script>
<?php
// You can place PHP like this

?>
{/source}