That section on RTD is a bit ambiguous and easy to miss, since it only shows an example and doesn't actually *state* 2 spaces, nor explain why it's 2 spaces in Django/Jinja templates when we use 4 spaces almost everywhere else. I know we *tend* to use 2 spaces in templates but never knew it was actually required. Is there a reason for it other than HTML tends to have a lot more nesting and indents?