Render twig-template with dynamically placed HTML in Symfony2?

I have an action and a Twig-template.

Via render() it is possible to place a text for a Twig-tag开发者_高级运维 {{ tagname }}.

But this text is escaped. Now I would like to place (not-escaped) HTML-code.

How is that done in Symfony2?

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Escaping is handled by Twig.

{{ var }} leads to escaped output.

{{ var|raw }} leads to raw/not-escaped output.

raw is a filter.