Note
Page source: jinja/literal.rst — release 0.1.
This box is written once, in _templates/page_header.rst, and rendered
into every page that includes it. page comes from the {% set %} at
the top of the including document; release comes from the library's
jinja_context.
Jinja That Is Not Jinja
A page documenting Jinja has to show its syntax without it being rendered.
{% raw %} does that, exactly as it does in Jinja2:
The text between the two markers is copied through untouched, so an undefined name inside it is never looked up and never reported.
A library that does not set jinja = True needs none of this: its sources
are parsed exactly as written, and {{ is an ordinary pair of braces.