Set and output meta content
{% do _page.addMeta({'name': 'robots', 'content': 'index, follow'}) %}
{{ _page.meta() }}
Add a meta tag if it doesn't already exist
{% do _page.addMetaIfMissing({'name': 'robots', 'content': 'index, follow'}) %}
Set the meta description
{% do _page.setMetaDescription('Page meta description value') %}
Set the meta robot tag
{% do _page.setMetaRobots('index, follow') %}