wrapper.tt

  !!! 5
  %html
  [% content %]

hello.tt

  [%- message='Hello World' %]
  [%- USE Haml -%]
  [%- WRAPPER wrapper.tt | haml -%]
  [%- FILTER haml -%]
    %head
      %meta{:charset => "utf-8"}
      %title hello
    %body
      %p [% message %]
      %ul
      [%- total=0; WHILE total < 5 %]
        %li [% total=total+1 %][% total %]
      [%- END -%]
  [%- END -%]