[Radiant] Using HAML in templates?

[Jordon Bedwell]

I noticed that Radiant has HAML but are we able to use them in templates
by default? I've tried something like:

%p hello world this is a demo

%figure <
    %img{:src => 'image.jpg', :alt => 'Hello', :height='340'} <
        %figcaption <
            %span <
                Caption here

But it does not parse.  I might be going crazy and not doing it right?